正确答案: C

compression plate

题目：A distance piece, known as a （） may be interposed between the rod and the bearing housing.

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学习资料的答案和解析：

[单选题]燃气动力装置是指（）。

A+B

[单选题]拆卸机器时不必（）。

对拆下的零件进行磁粉探伤

[单选题]Emulsion oils and sodium nitrite are both approved additives, but （） cannot be used if any pipes are galvanized or if soldered joints exist.

the latter

[单选题]In the combustion chamber, the part whose surface is exposed to the highest temperature is the （）.

piston

[单选题]The quality of the fuel oil and lube oil （）, Im afraid.

has much to do with the operation of the engine and its life

[单选题]When an auxiliary boiler is panting and emitting black smoke, you should （）.

increase the air supply