正确答案: A

圆度、圆柱度

题目：反映舵杆轴颈磨损的指标有（）。

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学习资料的答案和解析：

[单选题]活塞运动部件与固定件相互位置校中是为了（）。

实现校中技术要求

[单选题]柴油机冷态即环境温度下测量曲轴臂距差具有测量值（）。Ⅰ.准确；Ⅱ.符合规范；Ⅲ.稳定；Ⅳ.便于操作；Ⅴ.不受温度影响。

Ⅰ＋Ⅲ＋Ⅳ

[单选题]赛龙艉轴承材料的性能优于（）和（）。

铁梨木/尼龙

[单选题]Charging is the filling of the engine cylinder with a supply of （） for compression.

fresh air

[单选题]In a four-stroke engines the camshaft rotates at （）.

half the engine rotational speed

[单选题]On opposite ends of a single shaft of a turboblower are a gas driven （）and a air compressor, which are sealed each other.

turbine

[单选题]With the shell and cap assembled as for running, a check must be made that the clearance between the cap and the housing （）.

are suitable

[单选题]A magnetic strainer is used in the diesel engine reduction gear oil system to remove small particles of（）.

iron or steel