正确答案: A

拉线法

题目：舵系固定件的舵承孔同轴度检验采用（）方法。

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学习资料的答案和解析：

[单选题]下列现象中（）会引起增压器振动。Ⅰ.叶片裂纹；Ⅱ.叶片脏污积垢；Ⅲ.气封损坏；Ⅳ.船舶长期停航；Ⅴ.叶片折断。

A．Ⅱ＋Ⅳ＋Ⅴ

[单选题]舵杆不允许有（）。

横向裂纹

[单选题]（） is usually driven by the engine camshaft and supplies pilot air to the cylinder air start valve.

An air distributor

[单选题]All three systems have the ports （） to swirl the incoming air and direct it in the appropriate path.

being rounded

[单选题]Fuel injection valves should be taken out, cleaned, and lifting checked every （）.

four to six months