正确答案: A

轮机长

题目：安装艉轴和螺旋桨时（）应在现场监督。

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学习资料的答案和解析：

[单选题]船轴工作轴颈磨损后，经测量表明（）超标准时应予以修复。Ⅰ.圆度；Ⅱ.圆柱度；Ⅲ.椭圆度；Ⅳ.法兰径向跳动；Ⅴ.法兰端面跳动。

Ⅰ＋Ⅱ＋Ⅳ

[单选题]按舵叶截面形状分为（）舵。Ⅰ.平板形；Ⅱ.叶形；Ⅲ.机翼形；Ⅳ.流线型；Ⅴ.直线形。

Ⅰ＋Ⅳ

[单选题]A common trouble with the fuel pump plungers or fuel valve spindle is （）.

oil leakage

[单选题]A governor automatically controls engine speed by regulating （）.

fuel supply

[单选题]Marine four-stroke diesel engines are mainly （）.

of trunk piston type

[单选题]Which of the following may take place if the clearance of the main bearings are excessive?（）

all the above

[单选题]Crank web deflection readings will give a positive indication of （）.

worn main bearing journals