【名词&注释】
主柴油机(main diesel engine)
[单选题]测量曲轴臂距差时,曲轴旋转一周,可依次测得臂距值为()。
A. L右、L上、L下、L左
B. L上、L下、L左、L右
C. L左、L右、L上、L下
D. L上、L右、L下、L左
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学习资料:
[单选题]船上主柴油机吊缸检修时进行活塞运动部件的校正测量是为了()。
A. 查找故障
B. 分析故障
C. 了解活塞运动部件在气缸中的状态
D. 使柴油机正常运转
[单选题]曲轴臂距差的符号表明曲轴()。
A. 受力程度
B. 受力方向
C. 弯曲变形方向
D. 应力性质
[单选题]() usually helps to induce air movement to assist combustion.
A. Cylinder cover
B. Main bearing
C. The exhaust valve
D. The piston movement
[单选题]It is important to use only pure lead and to choose a thickness of wire which is greater than the normal allowable clearance but () this amount.
A. not less than twice
B. greater at least twice than
C. not greater twice than
D. larger three times tha
[单选题]The ship has a diesel engine()a supercharger.
A. with
B. of
C. on
D. over
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