正确答案: C

换新

题目：连杆螺栓如发现少量螺纹损坏则应该（）。

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学习资料的答案和解析：

[单选题]废气锅炉出口排烟温度t2不应低于露点，为了最大限度利用排气余热，在标定工况下，t2=露点+△t（℃），式中△t不应小于（）℃.

25

[单选题]消除螺旋桨鸣音的办法是将随边0.4R～0.8R部分（），从而改变涡流引起的振动频率。

形状改变

[单选题]The power generated in the turbine must （） that required by the compressor.

be as large as

[单选题]When the fuel oil is burning in the combustion chamber, it （）.

gives off large amount of heat

[单选题]In a normally operating diesel engine, the main cause of lubricating oil contamination in the crankcase is a result of the （）.

breakdown of the lubricating oil by dilutio