西門(mén)子數(shù)控車(chē)802s對(duì)刀出現(xiàn) “存取不允許” 請(qǐng)高手幫忙解決一下

朱先生JF 2017-11-24 18:07:41 1379 瀏覽

我在網(wǎng)上也查了一下說(shuō)是系統(tǒng)權(quán)限問(wèn)題好像是鎖上了在機(jī)床上怎么能修改權(quán)限如果把系統(tǒng)電池重裝下能行嗎請(qǐng)高手指點(diǎn)

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kaizaojm075 2017-11-24 23:09:51

不用把電池重裝的，用戶提高權(quán)限的方法很簡(jiǎn)單，就是在面板上設(shè)置，同時(shí)按住面板的ALT+N鍵，進(jìn)入調(diào)試界面你就能找到設(shè)置口令然后輸入如下口令customer或evening然后左下角叫哦變成用戶或制造商了。這時(shí)你就有存取權(quán)限了。不知道這樣回答你明白了沒(méi)。

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西門(mén)子數(shù)控車(chē)802s對(duì)刀出現(xiàn) “存取不允許” 請(qǐng)高手幫忙解決一下: 我在網(wǎng)上也查了一下說(shuō)是系統(tǒng)權(quán)限問(wèn)題好像是鎖上了在機(jī)床上怎么能修改權(quán)限如果把系統(tǒng)電池重裝下能行嗎請(qǐng)高手指點(diǎn)

請(qǐng)高手幫忙翻譯一下 3: 2.2.1. Physical and physicochemical characterization The particle size distribution of the Ch-zeolite was determined using a laser diffraction equipment (CILASk 1064) and standard wet sieving (Mesh Tylerk series). Scanning electron mic... 2.2.1. Physical and physicochemical characterization The particle size distribution of the Ch-zeolite was determined using a laser diffraction equipment (CILASk 1064) and standard wet sieving (Mesh Tylerk series). Scanning electron microscopy (SEM-PHILIPSk XL20) was used for photomicrographs as well as to analyse the Ch-zeolite composition (Energy Dispersion X-ray， EDX). The sample was initially placed in a vacuum chamber for coating with a thin layer (few nanometers) of gold (Au). The specific surface area of the material was measured by the methylene blue technique and by nitrogen gas adsorption methods， with the latter also providing information about particle porosity. In the methylene blue adsorption method， aqueous solutions (50 ml) of methylene blue (100 mg l 1) were agitated using an orbital shaker (Marconik) for an hour at room temperature in the presence of different quantities of the Ch-zeolite (0.05–0.3 g). The suspensions were then allowed to settle for 23 h and the resulting supernatants were centrifuged at 5000 rpm before the analysis of the residual methylene blue concentration. Results obtained correspond to averaged values of three different experiments. The specific surface area was evaluated by the Langmuir model， assuming the formation， at high concentrations， of a dye monolayer and 1.08 nm2 molecule 1， for the cross-sectional area (Van den Hul and Lyklema， 1968). The Ch-zeolite specific surface area was evaluated by the nitrogen gas adsorption method， using automated equipment (Autosorb 1-Quantachrome Instrumentsk)， employing multipoint BET isotherm adsorption data fitting. Also from these data， the porosity of the material was evaluated through parameters such as volume of total pores (d < 206 nm)， surface area and volume of micropores (d < 2 nm; Micropore Analysis Method). Zeta potential measurements for the natural and ammonia loaded zeolite， as a function of medium pH， were determined using a Zeta Plusk equipment (Brookhaven Instruments). Suspensions (0.01% v/v) of the Ch-zeolite， previously sieved below 37 Am (400 Mesh Tylerk)， in a 10 3 mol l 1 solution of KNO3 were used and the medium pH was controlled with the addition of HNO3 (pH< 7) and KOH (pH>7)， separately. For the Ch-zeolite saturated with ammonia， suspensions of the material were prepared by the same procedure， except that the sample was loaded with 100 mg NH3–N l 1 of ammonia. 展開(kāi)

西門(mén)子802s和RS232線數(shù)控系統(tǒng)如何連接電腦傳輸加工程序給數(shù)控車(chē)？:

富士 f85 相機(jī)有問(wèn)題啊!請(qǐng)高手幫忙解決!~: 本人買(mǎi)了一款富士 f85 ，可是現(xiàn)在機(jī)子對(duì)著光源拍照，屏幕就會(huì)閃爍的很厲害，不知道是機(jī)子的事還是本來(lái)就這樣，特別是對(duì)著太陽(yáng)光的時(shí)候，閃的顏色非常厲害，請(qǐng)幫忙解決，到底是什么原因，說(shuō)的詳細(xì)點(diǎn)，本人是新手.

烘箱溫度控制高手請(qǐng)幫忙?。。?！: 有聽(tīng)說(shuō)過(guò)一種通過(guò)控制加熱功率的百分比輸出來(lái)控制烘箱溫度的方法！請(qǐng)問(wèn)是使用壽命儀表或者元件來(lái)實(shí)現(xiàn)的！?。?！求高手幫忙！或者有沒(méi)有其他方法通過(guò)控制加熱功率來(lái)實(shí)現(xiàn)烘箱的溫控??！... 有聽(tīng)說(shuō)過(guò)一種通過(guò)控制加熱功率的百分比輸出來(lái)控制烘箱溫度的方法！請(qǐng)問(wèn)是使用壽命儀表或者元件來(lái)實(shí)現(xiàn)的?。。?！求高手幫忙！或者有沒(méi)有其他方法通過(guò)控制加熱功率來(lái)實(shí)現(xiàn)烘箱的溫控?。。。。。≌?qǐng)告訴幫忙！展開(kāi)

英語(yǔ)高手幫忙翻譯一下: ThequalitysystemofthecompanyisinconformitywithISO9002.Makingcomprehensiveuseofbiotechnology，thecompanyspecializesinmanufacturingandsellingC-4seriesorganicacidsandchiralpr... The quality system of the company is in conformity with ISO 9002 . Making comprehensive use ofbiotechnology， the company specializes in manufacturing and selling C-4series organic acids and chiral products. These products are widely used in many fields such as food， phamaceutical and chemical industries， and are well accepted by the overseas markets. The man products are L-Malic acid ， DL-Malic acid， L(+)-Tartaric acid ， Fumaric acid， Maleic acid and other organic acids. Annual productivity amounts to 20，000 tones. The company has become an important manufacturer of C-4 series organic acids in the world . All the products of the company have respectively met the different international aadvanced standards such as Food chemicals Codex， U.S. Pharmacopoeia ，British Pharmacopoeia and the products have obtained Star-K Kosher certificate. Above 70% of the Companys products are exported to Japan， Europe， Australias， the United states and middle East ， and they are renown and well recognized in the international markets. The company will devote itself to research and development of enzyme technology and organic electrochemistry. It will continuously introduce new food additives， chiral pharmaceutical intermediates， chiral auxiliaries and chiral drugs. Depending on superior quality， good service and high reputation， the company is willing to establish a long-term mutually beneficial business partnership with overseas customers and continue contribute to the happy life of humans. 展開(kāi)

50分！高手幫忙翻譯一下: LabVIEWisapowerfulandcomplexprogrammingenvironment.LabVIEWisshortforLaboratoryVirtualInstrumentEngineeringWorkbench.Itisapowerfulandflexibleinstrumentationandanalysissoft... LabVIEW is a powerful and complex programming environment. LabVIEW is short for Laboratory Virtual Instrument Engineering Workbench. It is a powerful and flexible instrumentation and analysis software development application created by the folks at National Instruments—a company that creates hardware and software products that leverage computer technology to help engineers and scientists take measurements， control processes， and analyze and storem data. National Instruments was founded over twenty-five years ago in Austin， Texas by James Truchard (known as Dr. T)， Jeffrey Kodosky， and William Nowlin. At the time， all three men were working on sonar applications for the U.S. Navy at the Applied Research Laboratories at The University of Texas at Austin. Searching for a way to connect test equipment to DEC PDP-11 computers， Dr. T decided to develop an interface bus. He recruited Jeff and Bill to join him in his endeavor， and together they successfully developed LabVIEW and the notion of a “virtual instrument.” In the process they managed to infuse their new company—National Instruments—with an entrepreneurial spirit that still pervades the company today. Engineers and scientists in research， development， production， test， and service industries as diverse as automotive， semiconductor， aerospace， electronics， chemical， telecommunications， and pharmaceutical have used and continue touse LabVIEW to support their work. LabVIEW is a major player in the area of testing and measurements， industrial automation， and data analysis. For example， scientists at NASA’s Jet Propulsion Laboratory used LabVIEW to analyze and display Mars Pathfinder Sojourner rover engineering data， including the position and temperature of the rover， how much power remained in the rover’s battery， and generally to monitor Sojourner’s overall health. LabVIEW provides an extensive library of virtual instruments and functions to help you in your programming. It includes conventional program debugging tools with which you can set breakpoints， single-step through the program， and animate the execution so you can observe the flow of data. 畢業(yè)設(shè)計(jì)急用，望高手幫忙翻譯一下展開(kāi)

數(shù)控立車(chē)加工震刀找不到原因: 數(shù)控立車(chē)加工震刀找不到原因

請(qǐng)各位高手幫忙翻譯一下專有名詞: 針規(guī)，推拉力計(jì) 不勝感激:

請(qǐng)幫忙翻譯一下，拜托: A new kind of TiO2 nanotube array/Ni(OH)2 (TiO2/Ni(OH)2) composite electrode with the storage ability of light energy was prepared by the deposition of Ni(OH)2 on the TiO2 nanotube array， which was synthesized by anodizing Ti foils in an HF... A new kind of TiO2 nanotube array/Ni(OH)2 (TiO2/Ni(OH)2) composite electrode with the storage ability of light energy was prepared by the deposition of Ni(OH)2 on the TiO2 nanotube array， which was synthesized by anodizing Ti foils in an HF aqueous solution. SEM and XRD results showed that Ni(OH)2 particles were well distributed on high density， well-ordered and uniform TiO2 nanotube arrays. The photoelectrochemical properties of the TiO2/Ni(OH)2 electrode were investigated in NaHCO3/NaOH buffer solution (pH 10) by means of UV–vis absorption spectra， cyclic voltammogram (CV) and photocurrent measurements. It was found that the TiO2/Ni(OH)2 electrode was highly sensitive to light and exhibited excellent photoelectrochromic properties. Upon UV irradiation， the photogenerated holes by TiO2 nanotube arrays can oxidize Ni(OH)2 to NiOOH， and thus the TiO2/Ni(OH)2 electrode can be photo-charged by light。1. Introduction Among many visible light photocatalysts， TiO2nanostructures have attracted much attention due to high photocatalytic activ-ity， nontoxicity， chemical stability and huge potential applications [1–6]. The TiO2 nanotube array is one of most attention-getting TiO2nanostructures because of large surface area and outstanding charge transport properties. TiO2nanotube arrays can be utilized in dye-sensitized solar cells[7–9]， photocatalysis and hydrogen gas sensing [10]. So far， a variety of methods have been attempted to prepare TiO2 nanotube arrays， such as hydrothermal synthe-sis[11]， Langmuir–Blodgett technique [12]， solution casting [13] and anodization technique[10，14]， etc. Among these methods， the anodization technique has many advantages of low cost， low tem-perature and easy to be scaled up to large-area preparation. Recently， anewkindof photo-functional systemwith theenergy storage ability has been developed by coupling TiO2 photosen-sitive electrode with energy storage materials. In Takahashi and Tatsuma’swork[15]，aTiO2/Ni(OH)2bilayer thinfilmwas suggested for the oxidative energy storage. In this case， a redox-activep-type semiconductor Ni(OH)2is coupled withn-type TiO2photocatalyst to formap–njunction，WhenTiO2is illuminatedby light， holesgen-erated at the junction are separated from excited electrons， trans-ported into the bulk of Ni(OH)2and oxidized Ni(OH)2to NiOOH. Therefore， the oxidative energy storage system was constructed 展開(kāi)

大腸桿菌檢測(cè)的問(wèn)題，請(qǐng)高手幫忙: 如題，在大腸桿菌GB/T 4789.38 2008中，Z終的大腸桿菌數(shù)是根據(jù)LST肉湯陽(yáng)性管數(shù)查MPN表得到的，那么后面的復(fù)發(fā)酵試驗(yàn)和生化試驗(yàn)是不是可以不用做的啊? 后面是不是就是為了驗(yàn)證以上檢測(cè)的準(zhǔn)確性的呢？請(qǐng)高手賜教，不勝感激涕零

分貝疊加問(wèn)題，請(qǐng)高手幫忙: 有一種設(shè)備的噪音為3米處55分貝，如果五臺(tái)這種設(shè)備放在一起，那所產(chǎn)生的噪音是多大？求公式及原理？請(qǐng)?jiān)敿?xì)解答，會(huì)增加懸賞的，拜托了，高手們... 有一種設(shè)備的噪音為3米處55分貝，如果五臺(tái)這種設(shè)備放在一起，那所產(chǎn)生的噪音是多大？求公式及原理？請(qǐng)?jiān)敿?xì)解答，會(huì)增加懸賞的，拜托了，高手們展開(kāi)

帕薩特左前速度傳感器g47故障怎么解決，請(qǐng)大家?guī)兔σ幌?:

廣州數(shù)控980tdb運(yùn)行宏程序怎么到這句就報(bào)警，請(qǐng)高手幫忙，謝謝！

請(qǐng)各位大蝦幫忙翻譯一下：: Withmorethan6millionnewmeasurementchannelssoldlastyear，NationalInstrumentsisaworldwideleaderinvirtualinstrumentation.Engineershaveusedvirtualinstrumentationformorethan25y... With more than 6 million new measurement channels sold last year， National Instruments is a worldwide leader in virtual instrumentation. Engineers have used virtual instrumentation for more than 25 years to bring the power of flexible software and PC technology to test， control， and design applications making accurate analog and digital measurements from DC to 2.7 GHz. This document provides an excellent introduction to virtual instrumentation as well as additional resources for continued research. What is virtual instrumentation? With virtual instrumentation， software based on user requirements defines general-purpose measurement and control hardware functionality. Virtual instrumentation combines mainstream commercial technologies， such as the PC， with flexible software and a wide variety of measurement and control hardware， so engineers and scientists can create user-defined systems that meet their exact application needs. With virtual instrumentation， engineers and scientists reduce development time， design higher quality products， and lower their design costs. 展開(kāi)

請(qǐng)專家?guī)兔Ψg一下，謝謝！: 粒度檢測(cè)方法與優(yōu)缺點(diǎn)比較粉末粒度分布的測(cè)量方法經(jīng)過(guò)百余年的發(fā)展，據(jù)統(tǒng)計(jì)至少已經(jīng)發(fā)展了上百種，但隨著科技的發(fā)展，有些方法被逐步淘汰，有些方法得到了改進(jìn)和發(fā)展（如激光散射法、動(dòng)態(tài)光散射等），并在生產(chǎn)、科研中得到了廣泛的應(yīng)用，現(xiàn)在普遍使用的測(cè)量... 粒度檢測(cè)方法與優(yōu)缺點(diǎn)比較粉末粒度分布的測(cè)量方法經(jīng)過(guò)百余年的發(fā)展，據(jù)統(tǒng)計(jì)至少已經(jīng)發(fā)展了上百種，但隨著科技的發(fā)展，有些方法被逐步淘汰，有些方法得到了改進(jìn)和發(fā)展（如激光散射法、動(dòng)態(tài)光散射等），并在生產(chǎn)、科研中得到了廣泛的應(yīng)用，現(xiàn)在普遍使用的測(cè)量方法有篩分法、顯微圖像法、光透沉降法、激光散射（衍射）法等幾種，下面簡(jiǎn)單介紹幾種常用的粒度測(cè)量方法。 ▲ 篩分法是一種具有很長(zhǎng)歷史的粒度測(cè)定方法，篩分法粒度測(cè)量是利用一組篩孔大小不同的標(biāo)準(zhǔn)篩將粉末進(jìn)行篩分，然后對(duì)每個(gè)篩上樣品分別進(jìn)行稱重，進(jìn)而得到以質(zhì)量為量綱的粒度分布數(shù)據(jù)，并可由分布結(jié)果計(jì)算出如Dv50等其它參數(shù)。篩分滶要特點(diǎn)是測(cè)量成本低廉，操作簡(jiǎn)單，但存在著如重復(fù)性差，測(cè)量時(shí)間較長(zhǎng)，不能對(duì)5um以下的顆粒進(jìn)行測(cè)量等缺點(diǎn)。 ▲顯微圖像分析法利用光學(xué)或電子顯微鏡及計(jì)算機(jī)圖像識(shí)別技術(shù)對(duì)顆粒粒度及粒度分布，顆粒形貌進(jìn)行測(cè)量，分析的方法。這種方法不僅能夠測(cè)量粒度分布而且能夠直接觀察到顆粒的形狀，是目前唯yi的一種可目視的直觀測(cè)試方法，這種特點(diǎn)也是其它粒度測(cè)量?jī)x器所不具備。這種方法的優(yōu)點(diǎn)是直觀、簡(jiǎn)便、費(fèi)用低，缺點(diǎn)是由于取樣量很少，為使測(cè)量結(jié)果代表性，必須增加待測(cè)顆粒的個(gè)數(shù)（一般認(rèn)為測(cè)量顆粒的個(gè)數(shù)應(yīng)在1000個(gè)以上），這就相應(yīng)嗇了測(cè)量時(shí)間，及測(cè)試人員的工作強(qiáng)度，但由于能夠?qū)︻w粒形貌（如長(zhǎng)徑比等）進(jìn)行測(cè)量，目前也有廣泛應(yīng)用。 ▲光透沉降法沉降法粒度測(cè)試的理論基礎(chǔ)是斯托克司定律和比爾定律。前者給出顆粒沉降速度與粒徑的關(guān)系，后者闡明光透過(guò)率與粒徑重量的關(guān)系?？珊?jiǎn)單的描述為：在沉降液中，有若干相同比重的顆粒，如果同一時(shí)刻，從同一位置開(kāi)始下降，則不同直徑的顆粒到達(dá)測(cè)量區(qū)的時(shí)間是不同的，根據(jù)顆粒到達(dá)測(cè)量區(qū)的時(shí)間，及光強(qiáng)的強(qiáng)弱，就可以計(jì)算出顆粒的粒徑，及相應(yīng)粒徑的顆粒在顆粒群中占有的比例。采用此種原理的測(cè)量?jī)x器有比較長(zhǎng)的使用歷史，但隨著科技的發(fā)展和測(cè)量手段的進(jìn)步，此方法的缺點(diǎn)也日益突出，如測(cè)量時(shí)間長(zhǎng)，重復(fù)性誤差大等。 ▲ 激光散射法顆粒測(cè)量?jī)x器是以富朗和菲衍射（Fraunhofer diffraction）和米氏散射（Mie scattering）為理論基礎(chǔ)。此理論可以簡(jiǎn)單理解為沿直線傳播的平行激光束，在傳播過(guò)程中遇到顆粒的遮擋后，傳播方向發(fā)生了改變（即發(fā)生了衍射和散射現(xiàn)象），并且大顆粒使激光改變的角度小，小顆粒改變大。（實(shí)際上是由于顆粒的遮擋在無(wú)限遠(yuǎn)處形成了一個(gè)愛(ài)里斑，愛(ài)里斑87%的能量集中在ZX亮環(huán)，且顆粒直徑越大，ZX環(huán)越小，顆粒直徑越小ZX亮環(huán)越大）。如果能在不同角度上接收光能，對(duì)于相應(yīng)的的角度，其光能是對(duì)應(yīng)直徑的顆粒集合發(fā)生衍射（散射）造成的，相應(yīng)其他角度上光能的強(qiáng)弱也就反應(yīng)了對(duì)應(yīng)直徑顆粒在整個(gè)顆粒集合中占有的比例。 ▲ 采用激光粒度測(cè)量?jī)x器相對(duì)于光透沉降粒度測(cè)量?jī)x器具有很多優(yōu)點(diǎn)： 1. 原理先進(jìn)，并且由于測(cè)試過(guò)程中沒(méi)有需要預(yù)先設(shè)定的參數(shù)（如樣品比重、介質(zhì)黏度、環(huán)境溫度等），及在測(cè)量過(guò)程中隨時(shí)改變的條件，因此測(cè)量結(jié)果準(zhǔn)確、可靠。 2. 測(cè)量速度快，測(cè)試時(shí)間與樣品粒度分布無(wú)關(guān)，典型測(cè)試過(guò)程一般小于一分鐘； 3. 每次測(cè)試，多次對(duì)樣品進(jìn)行掃描，測(cè)試結(jié)果重復(fù)性好； 4. 進(jìn)樣方式種類多，可適用于各種類樣品。展開(kāi)

請(qǐng)專家?guī)兔Ψ治鲆幌履虺Ｒ?guī): 患者信息：女 50歲天津南開(kāi)區(qū) 病情描述(發(fā)病時(shí)間、主要癥狀等)：白細(xì)胞 97.5↑ 紅細(xì)胞36.7↑ 上皮細(xì)胞 28.2 管型 0.53 白細(xì)胞(高倍視野) 17.6↑ 紅細(xì)胞(高倍視野)6.6↑ 上皮細(xì)胞 (高倍視野)5.1 管型 (低倍視野) 0.53 病理管型0.53 結(jié)晶數(shù)量0 小圓... 患者信息：女 50歲天津南開(kāi)區(qū) 病情描述(發(fā)病時(shí)間、主要癥狀等)：白細(xì)胞 97.5↑ 紅細(xì)胞36.7↑ 上皮細(xì)胞 28.2 管型 0.53 白細(xì)胞(高倍視野) 17.6↑ 紅細(xì)胞(高倍視野)6.6↑ 上皮細(xì)胞 (高倍視野)5.1 管型 (低倍視野) 0.53 病理管型0.53 結(jié)晶數(shù)量0 小圓上皮細(xì)胞數(shù)量 1.7 類酵母細(xì)胞數(shù)量0 尿膽原 Normal 膽紅素 NEG 酮體NEG 隱血NEG 蛋白質(zhì)NEG 亞硝酸鹽NEG 白細(xì)胞酯酶+- Ca15 葡萄糖NEG 比重1.020 PH酸堿度 6.5 維生素C 0 微白蛋白NEG 展開(kāi)

請(qǐng)高手幫我翻譯一下這一段。。。: Carbonnanomaterialsarenovelmanufacturedmaterials，havingwidespreadpotentialapplications.Adsorptionofhydrophobicorganiccompounds(HOCs)bycarbonnanomaterialsmayenhancetheirto... Carbon nanomaterials are novel manufactured materials， having widespread potential applications. Adsorption of hydrophobic organic compounds (HOCs) by carbon nanomaterials may enhance their toxicity and affect the fate， transformation， and transport of HOCs in the environment. In this research， adsorption of naphthalene， phenanthrene， and pyrene onto six carbon nanomaterials， including fullerenes， single-walled carbon nanotubes ， and multiwalled carbon nanotubes was investigated， which is the first systematic study on polycyclic aromatic hydrocarbons (PAHs) sorption by various carbon nanomaterials. All adsorption isotherms were nonlinear and were fitted well by the Polanyi-Manes model (PMM). Through both isotherm modeling and constructing “characteristic curve”， Polanyi theory was useful to describe the adsorption process of PAHs by the carbon nanomaterials. The three fitted parameters (Q0， a， and b) of PMM depended on both PAH properties and the nature of carbon nanomaterials. For different PAHs， adsorption seems to relate with their molecular size， i.e.， the larger the molecular size， the lower the adsorbed volume capacity (Q0)， but higher a and b values. For different carbon nanomaterials， adsorption seems to relate with their surface area， micropore volume， and the volume ratios of mesopore to micropore. Quantitative relationships between these sorbent properties and the estimated parameters of PMM were obtained. These relationships may represent a first fundamental step toward establishing empirical equations for quantitative prediction of PAH adsorption by carbon nanomaterials and possibly other forms of carbonaceous (geo-) sorbents， and for evaluating their environmental impact. In addition， high adsorption capacity of PAHs by carbon nanotubes may add to their high environmental risks once released to the environment， and result in potential alteration of PAHs fate and bioavailability in the environment. 展開(kāi)

機(jī)械制圖題目，請(qǐng)高手幫忙！不會(huì)勿擾: 1、在圖樣中比例是指圖形與實(shí)物相應(yīng)要素的（　）之比。　　(A)、大小之比　　(B)、面積之比　　(C)、線性之比　　(D)、體積之比2、一張A0圖紙可以裁成（?。圓3圖紙?！　?A)、三張　... 1、在圖樣中比例是指圖形與實(shí)物相應(yīng)要素的（　）之比。　　(A)、大小之比　　(B)、面積之比　　(C)、線性之比　　(D)、體積之比2、一張A0圖紙可以裁成（　）張A3圖紙?！　?A)、三張　　(B)、四張　　(C)、六張　　(D)、八張 3、在圖樣上標(biāo)注垂直方向的尺寸時(shí)，尺寸數(shù)字應(yīng)注寫(xiě)在尺寸線的左方中間位置且字頭朝（　?。！　?A)、上　　(B)、下　　(C)、左　　(D)、右 4、在圖樣上標(biāo)注圓弧尺寸時(shí)起止符號(hào)用（　?。！　?A)、45°斜線　　(B)、箭頭　　(C)、圓點(diǎn)　　(D)、× 5、在繪制機(jī)械圖時(shí)，通常采用的是（　?。┩队胺??！　?A)、ZX　　(B)、正　　(C)、斜　　(D)、以上都可以 6、物體的側(cè)面投影是從物體的（　　）投影?！　?A)、左面向右　　(B)、右面向左　　(C)、上面向下　　(D)、前面向后 7、點(diǎn)的投影規(guī)律中高平齊是指（　　?。┲g 的投影關(guān)系?！　?A)、V面和H面　　(B)、V面和W面　　(C)、H面和W面 8、在軸測(cè)投影圖的傾斜線上不能直接量取尺寸，只能在與軸測(cè)軸（　　）的對(duì)應(yīng)線上量取?！　?A)、成一定角度的　　(B)、相交　　(C)、平行　　(D)、不平行 9、水平線的（　　）投影反映線段的實(shí)長(zhǎng)?！　?A)、正面　　(B)、水平　　(C)、側(cè)面　　(D)、以上都可以 10、側(cè)垂線的（　?。┩队坝芯鄯e性?！　?A)、正面　　(B)、水平　　(C)、側(cè)面　　(D)、以上都可以 11、平面圖形為水平面時(shí)，它的（　?。┟嫱队胺从称矫鎴D形的實(shí)形?！　?A)、V　　(B)、H　　(C)、W　　(D)、以上都可以 12、用正垂面截切圓柱時(shí)，截平面與圓柱的軸線成（　）度角時(shí)，它的側(cè)面投影是圓?！　?A)、30　　(B)、45　　(C)、60　　(D)、90 13、用正垂面截切圓錐，截交線為橢圓時(shí)，橢圓短軸的正面投影在（　　）。　　(A)、軸線與截交線的交點(diǎn)　　(B)、截交線的中點(diǎn)　　(C)、任意位置　　　　　　　(D)、截交線的端點(diǎn) 14、如果在圓球正面投影兩軸線的交點(diǎn)處有一個(gè)點(diǎn)為可見(jiàn)點(diǎn)的正面投影，它的側(cè)面投影在（　?。?。　　(A)、兩軸線的交點(diǎn)　　　　　(B)、在垂直軸線的Z高點(diǎn)　　(C)、在垂直軸線的Z低點(diǎn)　　(D)、在水平軸線的Z右點(diǎn) 15、在圓球的水平投影上有一段斜線，此線段的正面和側(cè)面投影是（　?。！　?A)、一個(gè)點(diǎn)　　(B)、一段直線　　(C)、圓的一部分　　(D)、橢圓的一部分 16、每張圖樣都必須畫(huà)出標(biāo)題欄，標(biāo)題欄應(yīng)位于圖紙的（　　?。！　?A)、左上方　　(B)、左下方　　(C)、右上方　　(D)、右下方 17、不論采用何種比例，圖形中所標(biāo)注的尺寸數(shù)值必須是實(shí)物的（　　?。┏叽纭！　?A)、實(shí)際　　(B)、圖形上量得的　　(C)、放大后的　　(D)、縮小后的 18、若點(diǎn)A的坐標(biāo)值為（0、20、10）時(shí)，點(diǎn)A在（　?。┥?。　　(A)、正面投影面　　(B)、水平投影面　　(C)、側(cè)面投影面　　(D)、X軸 --------------------------------------------------------------------------------19、在圓錐上的點(diǎn)B，它的正面和水平投影均在圓錐的垂直軸線上，側(cè)面投影在圓錐的右面輪廓線上，則點(diǎn)B一定在圓錐的（　　）素線上?！　?A)、Z前　　(B)、Z后　　(C)、Z左　　(D)、Z右 20、如果點(diǎn)E和點(diǎn)F在正面投影面上是重影點(diǎn)，則它們的（　　）坐標(biāo)值相同?！　?A)、X和Y　　(B)、X和Z　　(C)、Y和Z　　(D)、X、Y和Z 展開(kāi)

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