航行中一旦发现增压器振动，则首先应该（）。

【名词&注释】

性能参数(performance parameter)、增压器(turbocharger)、中心线(center line)、发生变化

[单选题]航行中一旦发现增压器振动，则首先应该（）。

A. A．停机检修
B. B．查明原因
C. C．降低转速
D. D．锁住转子

查看答案&解析 查看所有试题

学习资料：

[单选题]主机主轴承磨损后，（）性能参数发生变化。Ⅰ.臂距差；Ⅱ.桥规值；Ⅲ.轴承间隙；Ⅳ.曲轴轴线状态；Ⅴ.主轴颈下沉量。

A. Ⅰ＋Ⅱ＋Ⅲ＋Ⅳ
B. Ⅰ＋Ⅱ＋Ⅳ
C. Ⅰ＋Ⅱ＋Ⅲ＋Ⅳ＋Ⅴ
D. Ⅰ＋Ⅱ＋Ⅲ

[单选题]检测轴系中心线状态发现δ总和φ总均严重超差，应采取（）的措施进行调整。

A. 偏镗艉轴管
B. 移动主机
C. 调节中间轴承位置
D. 同时调整艉轴和主机的位置

[单选题]All the rings are slightly rounded on their external top and bottom edges to keep the oil film on the cylinder liner during （） for new piston rings.

A. the running-in period
B. the running process
C. gas exchange process
D. the boiler firing

[单选题]Each cylinder is closed at the top by a （）, made of a special heat-resistant steel.

A. cylinder liner
B. coupling flange
C. cylinder cover
D. piston crow

[单选题]Which of the following may lead to the engine NOT to start on air?（）

A. starting air pressure too high
B. correct timing of starting air valves
C. three of the six starting valves stuck
D. the turning gear disengaged

[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

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