【名词&注释】
柴油机(diesel engine)、说明书(specification)、具体情况(concrete conditions)
[单选题]测量曲轴臂距差后,应对所测数据依据()进行分析和判断。
A. 柴油机说明书
B. 具体情况
C. 有关标准
D. 柴油机说明书和有关标准
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学习资料:
[单选题]换新主机的连杆大端轴瓦时,其上瓦与曲柄销颈在()内的接触面积不少于()。
A. 40°~60°/75%
B. 40°~60°/85%
C. 60°~90°/75%
D. 60°~90°/85%
[单选题]() fuel oils () lubricating oils require treatment before passing to the engine.
A. Both;and
B. Neither;nor
C. Either;or
D. Both;or
[单选题]The external circumference of a pair of main bearing shells is slightly () that of the bore of the housing which receives them Whats the meaning of “that” in the sentence above?
A. less than
B. lighter than
C. larger than
D. smaller tha
[单选题]Exhaust valve grooving and corrosion is caused by certain components of residual fuel oilThese components are sodium, sulfur, and ().
A. vanadium
B. carbon
C. copper
D. ash
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