正确答案: D

柴油机说明书和有关标准

题目：测量曲轴臂距差后，应对所测数据依据（）进行分析和判断。

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学习资料的答案和解析：

[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（）。

60°～90°/75%

[单选题]（） fuel oils （） lubricating oils require treatment before passing to the engine.

Both；and

[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？

larger than

[单选题]Exhaust valve grooving and corrosion is caused by certain components of residual fuel oilThese components are sodium, sulfur, and （）.

vanadium