【名词&注释】
添加剂(additive)、氧化铜(copper oxide)、.氧化铁、故障率曲线(failure rate curve)
[单选题]采用压铅法测量主轴承的轴承间隙时,不应(),以免破坏测量工作。
A. 粗心
B. 违反测量步骤
C. 使所测铅丝厚度混乱
D. 盘车
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学习资料:
[单选题]大量产品的故障率随时间变化的规律曲线[λ(t)-t)]称为()。
A. 故障率曲线(failure rate curve)
B. 故障曲线
C. 浴盆曲线
D. A,B,C都对
[单选题]使用含有()的燃油添加剂,可使烟灰失去粘性,导致烟灰沉积趋势的减少。Ⅰ.氧化铜;Ⅱ.氧化铁
A. 仅Ⅰ对
B. 仅Ⅱ对
C. Ⅰ+Ⅱ
D. Ⅰ,Ⅱ都不对
[单选题]Due to () action of pistons some relative motion between parts in contact in the coolant supply and return system must occur.
A. reciprocating
B. rotating
C. running
D. removing
[单选题]Increasing the temperature of a fuel will reduce its ().
A. viscosity
B. pressure
C. resistance
D. setting point
[单选题]Routine monitoring of a diesel engine should include ().
A. checking for leaks
B. checking temperatures and pressures
C. listening for abnormal noises
D. all of the above
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