由于螺旋桨的（）失效会导致船舶剧烈振动。

【名词&注释】

螺旋桨(propeller)、人身事故(fatal accident)

[单选题]由于螺旋桨的（）失效会导致船舶剧烈振动。

A. 桨叶严重腐蚀
B. 桨叶严重磨损
C. 桨叶变形
D. 某一桨叶折断

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学习资料：

[单选题]在船上吊缸检修时，为了安全不仅要遵守吊运安全规则，而且（）。

A. 严禁超重吊运
B. 起吊前绑扎牢靠
C. 防止发生人身事故
D. 吊运中应平稳

[单选题]（） is the removal of exhaust gases by blowing in fresh air.

A. Gas exchange
B. Charging
C. Scavenging
D. Supercharging

[单选题]Fuel oil is thought to be one of the main factors （） the operation and maintenance of an engine.

A. have nothing to do with
B. having nothing to do with
C. have much to do with
D. having much to do with

[单选题]The bearing shells depend on the accuracy of （） to held them in a truly circular shape.

A. the gap
B. the clearance
C. the bore
D. the housing

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

A. the needle valve
B. the plunger
C. the piston
D. the cylinder

[单选题]There should be a lubricating oil （） between the main beatings and the crankshaft.

A. film
B. cap
C. lacquer
D. shell

[单选题]The effective stroke of a constant-stroke, individual, fuel injection pump is varied by the （）.

A. control rack
B. delivery valve
C. governor speed
D. plunger crossbar

[单选题]Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.

A. wheelhouse control station
B. engine room control station
C. captains office
D. chief engineers office

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