正确答案: C

位置精度

题目：活塞运动部件在船上安装前，应在车间平台对其（）进行复验。

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学习资料的答案和解析：

[单选题]二冲程十字头式柴油机活塞运动部件的平台检验主要是检查（）零件间的相互位置关系。

十字头、滑块和连杆

[单选题]由于铁梨木需进口，价格较高，故采用（）作为铁梨木的代用材料。

桦木层压胶木

[单选题]桦木层压胶木是铁梨木的代用材料，具有材质致密、坚硬、耐热、绝缘性好、成材率高，缺点是（）。Ⅰ.耐磨性差；Ⅱ.耐蚀性差；Ⅲ.耐水浸性差；Ⅳ.刚性差；Ⅴ.脆性大。

Ⅰ＋Ⅴ

[单选题]螺旋桨C区内的缺陷采用（）工艺进行修理。

焊补

[单选题]Charging-air pressure increases if there is incorrect combustion and drop in the （） of the diesel engine.

mechanical efficiency

[单选题]Lubricating oil for an engine is stored at the bottom of the （）, known as the sump or in a drain tank located beneath the engine.

crankcase

[单选题]The injector pump is operated by a cam which drives the （） up and down.

plunger

[单选题]To successfully reduce an excessively high diesel engine exhaust gas temperature, you should （）.

reduce the load on the engine