【名词&注释】
柴油机(diesel engine)、水压试验(hydrostatic test)、工作压力(working pressure)、活塞环(piston ring)、活塞杆(piston rod)、落水者(fall in water person)、机动船(motor vessel)、拖网渔船(trawler)、不一定(not always)
[单选题]柴油机部件(缸套、缸盖、活塞顶)作水压试验时，其试验压力一般取______。
A. 2倍工作压力
B. 1.5倍工作压力
C. 1.1倍工作压力
D. 0.7MPa
查看答案&解析
举一反三：
[单选题]互见中，机动船(motor vessel)在航时避让从事捕鱼的船舶，下列说法正确的是________。
A. 避让双船拖网的渔船，应在其船尾或两船外舷不少于0.5海里处通过
B. 应避免从两船中间通过
C. 避让单船拖网渔船(trawler)时，应从其船尾1海里外通过
D. 以上均正确
[单选题]某曲柄的两主轴承在水平平面内位置偏左,曲轴轴线呈左拱形,则其_( )。
A. >0B．某曲柄的两主轴承在水平平面内位置偏左，曲轴轴线呈左拱形，则其_( )。
B. >0
C.
D. =0
E. 不一定(not always)
[单选题]落水者在水温为2~4℃时可生存的时间是_____。
A. 1.5小时
B. 3小时
C. 6小时
[单选题]满载水线以上水密空间所具有的浮力称为( )。
A. 满载浮力
B. 空载浮力
C. 理论浮力
D. 储备浮力
[单选题]When a ship were found its equipment does not correspond substantially with the particulars of the Certificate by a nominated surveyor and corrective actions unable to be taken, then
A. the Certificate would be withdrawn
B. the ship owner would be fined
C. the shipping company must be notified immediately
D. the ship must proceed to the nearest appropriate repair yard for a repair without delay
[单选题]A crack in a cylinder liner can be caused by
A. worn piston rings
B. installation of undersized sealing rings
C. operating the engine at low loads
D. restricted cooling water passages
[单选题]从扫气口可以观察到下列零部件的工作状态______。Ⅰ.活塞环；Ⅱ.活塞顶；Ⅲ.活塞裙；Ⅳ.活塞杆；Ⅴ.缸套内表面。
A. Ⅰ＋Ⅲ＋Ⅳ＋Ⅴ
B. Ⅰ＋Ⅲ＋Ⅴ
C. Ⅰ＋Ⅱ＋Ⅲ
D. Ⅰ＋Ⅱ＋Ⅲ＋Ⅳ＋Ⅴ
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