2022海船船员考试题库船舶动力装置题库专业每日一练(10月07日)

1. [单选题]舵系运动件的同轴度检验采用（）。

A. 平台测量法
B. 拉线法
C. 光学仪器法
D. 不一定

2. [单选题]舵叶轴承孔与舵杆工作轴颈的同轴度偏差不得大于（）倍的舵承安装间隙。

A. 0.7
B. 1.0
C. 1.25
D. 1.5

3. [单选题]After passing through the turbine the exhaust gas is conducted out into the（）.

A. intercooler
B. compressor
C. cylinder
D. open air

4. [单选题]For Vee-form engines, （） is shaped to given two slopping surface on which （） are placed at the correct relative angle to each other.

A. the bottom of the column；the cylinder blocks
B. the top of the column；the cylinder heads
C. the top of the column；the cylinder blocks
D. the bottom of the column；the cylinder head

5. [单选题]If an electric cargo winch is being used to lift a draft of cargo and the engine room loses all power，which will occur?（）

A. A pawl，forced by a spring mechanism，will engage the teeth of the bull gear and hold the load
B. An electromagnetic brake will hold the load where it is suspended
C. The load will fall rapidly to the deck unless the foot brake is engaged
D. The load will slowly lower to the deck under control of the drag of the winch motor

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