正确答案: D

5年

题目：带有雪橇型键槽且根部有适当圆角的双螺旋桨轴或艉轴，其检验间隔期规定为（）。

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学习资料的答案和解析：

[单选题]艉轴铜套损坏的主要形式有（）。Ⅰ.腐蚀；Ⅱ.裂纹；Ⅲ.过度磨损；Ⅳ.套合松动；Ⅴ.接缝不良。

Ⅱ+Ⅲ＋Ⅳ＋Ⅴ

[单选题]（） allows for expansion and water make up in the water cooling system.

A head tank

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

plunger

[单选题]Valve overlap is the period during which （）.

both valves are ope

[单选题]Engine displacement is equal to the cylinder （）.

area times the stroke, times the number of cylinders