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发布时间 : 星期日 文章CWI考试试题汇编更新完毕开始阅读44c96fac3186bceb19e8bb82

Q7-6 每小时30立方英吋的气体流速等于每分钟多小升(A gas flow rate 30 cfh is what in l/min?)

a. 1.4 l/min b. 14 l/min c. 140 l/min d. 64 l/min e. 640 l/min

Q7-7 公制系统或国际单位制比美国单位系统是否更复杂(The metric system, or SI, is far more complicated than the U.S. system.) a. 真(true) b. 假(false)

Q7-8 目前许多美国工业用国际单位制(Many U.S. industries presently use the SI.) a. true b. false

Q7-9 为了更有效的工作,美国工人必须知道哪种测量系统(To be most effective, the U.S. worker must know which measurement system?) a. 公制(metric) b. 国际单位制(SI)

c. 美国习惯(U.S. customary) d. 所有以上的(All of the above)

Q7-10 美国焊接协会强制要求使用公制系统(AWS has mandated the requirement that the metric system be used.) a. 真(true) b. 假(false)

Q7-11 美国焊接协会编制了一份帮助过渡至公制的指导。它命名为:(AWS has prepared a guide for aiding the transition to metrication. Its designation is:) a. D1.1

b. 第八卷(Section VIII) c. A3.0 d. A1.1 e. 无以上任何一个(None of the above)

Q7-12 下列哪个国家没有官方地使用国际单位制(Which of the following countries are not officially on the SI system?)

a. 日本(Japan) b. 英国(Britain) c. 墨西哥(Mexico) d. 澳大利亚Australia e. 美国(United States)

Q7-13 在美国的习惯系统中,基本单位盎司用于测量什么?(In the U.S. customary system, what is the base unit ounce used to measure?) a. 质量(mass) b. 体积(volume)

c. 所有以上的(all of the above) d. 距离(distance)

Q7-14 美国测量系统是以10的幂为基础的(The U.S. system of measurement is based on powers of 10.) a. 真(true) b. 假(false)

Q7-15 在国际单位制中测量压力和拉伸强度是用什么基本单位(Pressure and tensile strength are measured in the SI using what as the base unit?) a. 升(liter) b. 米(meter)

c. 帕(pascal) d. 牛顿(newton) e. 赫兹(hertz)

Q7-16 一个调整器所示气体压力为50 psi。以kPa为单位是多少(A regulator indicates 50 psi of gas pressure. What is this in kPa?) a. 7.25 kPa b. 725 kPa c. 345 kPa d. 3.45 kPa e. 3,450 kPa

Q7-17 在美国和国际单位制中沉淀率是以什么单位测量的(Deposition rate is measured in what units in the U.S. and SI system?) a. kg b. lb c. kg/hr d. lb/hr

e. 上述的c和d (c and d above)

Q7-18 数4,532.182圆整至最近的十位数(When rounded to the nearest tenths, what is 4,532.182?) a. 4,532.1 b. 4,532.18 c. 4,532 d. 4,532.2 e. 4.530

Q7-19 拉伸强度为8.5 x 104 psi材料,将其拉伸强度转换为兆帕时为多少(A material having a tensile strength of 8.5 x 104 psi has what value in megapascals?) a. 5.9 x 106 Mpa b. 5.86 x 103 Mpa c. 58 Mpa d. 586 Mpa

e. all of the above

Q7-20 拉伸强度为700 Mpa的材料,其拉个强度为psi时的值是多少(A material having a tensile strength of 700 Mpa has what value in psi?) a. 10.150 psi b. 101.50 psi c. 1,015 psi d. 101,500 psi e. 1,015 x 108 psi

American Welding Society & Moody International China Welding Inspection Technology Workbook 焊接检验技术手册 Module 8 第8单元

Welding metallurgy for the welding inspector 焊接检验师的焊接冶金学 请不要在此书上书写! Don’t write in this book!

Q8-1 当工金属被加热是(As a metal is heated:) a. 能量被加入结构(energy is added to the structure) b. 原子分的更开(the atoms move further apart) c. 分子振动更激烈(the atoms vibrate more vigorously) d. 金属膨胀(the metal expands) e. 所有以上的(all of the above)

Q8-2 哪种物体状态所含的能量最少(The state of matter which exhibits the least amount of energy is:) a. 固体(solid) b. 液体(liquid) c. 气体(gas)

d. 类似液体(quasi-liquid)

e. 无以上任何一个(none of the above)

Q8-3 在焊接过程中,由于不均匀加热在焊缝上而引起的问题是(A problem occurring in weldments caused by the nonuniform heating produced by the welding operation is:)

a. 气孔(porosity)

b. 不完全熔合(incomplete fusion) c. 变形(distortion) d. 夹渣(slag inclusions)

e. 无以上任何一个(none of the above)

Q8-4 下列哪种方法不用于清除或减少剩余应力(Which of the following is not a method used to eliminate or reduce residual stresses?) a. 振动应力消除(vibratory stress relief) b. 外部抑制(external restraint) c. 热应力消除(thermal stress relief) d. 锤击(peening) e. 退火(annealing)

Q8-5 哪种合金形式使得合金原子存在母植物原子当中的空间(The type of alloying in which the alloy atoms are located in the spaces between the atoms of the parent metal is referred to as:) a. 原子合金(atomic alloying) b. 替代合金(substitutional alloying) c. 分隔合金(space alloying) d. 间隙合金(interstitial alloying) e. 无以上任何一个(none of the above)

Q8-6 含有奥氏体的钢被迅速淬火将会产生一个坚硬和易碎结构,如(Rapid quenching of a steel from the austenitic range results in a hard, brittle structure known as:)

a. 珠光体(pearlite) b. 碳化物(carbide) c. 碳化铁(cementite) d. 铁素体(ironite) e. 马氏体(martensite)

Q8-7 慢慢地冷却钢可产生一种软的,易延伸的显微。当在高度放大下可以该结构具有片状外表。这种结构是(Very slow cooling of steel may result in the production of a soft, ductile microstructure which has as a lamellar appearance when viewed under high magnification. This structure is referred to as:) a. 马氏体(martensite) b. 珠光体(pearlite) c. 贝氏体(bainite) d. 铁素体(ferrite) e. 碳化铁(cementite)

Q8-8 当钢迅速冷却时,产生马氏体结构。什么次热处理可以用于改进钢的延伸性(When rapid cooling produces a martensitic structure, what sub-critical heat treatment may be applied to improve the ductility of the steel?) a. 淬火(quenching) b. 回火(tempering) c. 退火(annealing) d. 正火(normalizing)

e. 无以上任何一个(none of the above)

Q8-9 焊接过程可以产生过多的热量输入。下列哪些改变可以减少热量的输入?(It is determined that a welding procedure is creating an excessive heat input. Which of the changes listed below would result in a reduction of the heat input?) a. 降低电流(decrease current) b. 降低电压(decrease voltage)