在船舶以主机“正常全速”运行时，尽管速度设定及压力正常，转速逐渐下降，驾驶台控制立即转换至机旁控制。利用机旁操纵杆，速度被设定在正常全速，但是转速依然下降。经仔细检查确定为调速器自身故障。

二冲程柴油机的曲柄销靠近这轴颈的一侧磨损大的原因是_______

A. 气体力的作用
B. 惯性力的作用
C. 摩擦力的作用
D. A+B

You are attempting to parallel two AC generators and the synchroscope pointer is revolving

A. higher than the bus frequency
B. lower than the bus frequency
C. file same as file bus frequency but out of phase with it
D. the same as the bus frequency, and the circuit breaker may be closed at nay pointer position

活塞顶面因积炭严重而过热，将导致_______

A. 烧蚀
B. 裂纹
C. 局部过热
D. 腐蚀

STCW78/95 Convention states that the officer in charge of the engineering watch is the representative

A. ship-owner's
B. master's
C. chief engineer's
D. manager's

When received the order "Finished With Engine", which of the following operations is wrong？

A. stop the L.O pump, S.W pump, jacket water cooling pump immediately
B. stop the F.O booster pump
C. engage the turning gear, turn the main engine
D. open the main engine scavenge air trunk's drain cocks

what is the use of a purifier ？explain the purpose of a gravity disc ？

当活塞产生时，应采用换新的方法处置

A. 环槽根部裂纹
B. 顶部裂纹
C. 冷却面腐蚀
D. 外圆面磨损

____does not belong to the mooring trial item.

A. Generator sets running test
B. Shafting intensity test
C. The function test for pumps that serving for M.E
D. M.E safety devices test

活塞顶部烧蚀的程度可用_______测量

A. 样板
B. 塞尺
C. 平尺
D. A＋B