【导读】
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1. [单选题]帆船在航道里从机动船左舷追越并需要机动船采取行动时，帆船应是：
A. 直航船，追越前应鸣放二短声
B. 直航船，不必鸣放声号
C. 让路船，追越前应鸣放二长二短声
D. 让路船，不必鸣放声号
2. [单选题]________ late for the meeting
A. Not be
B. Not
C. Don’t
D. Don’t be
3. [单选题]One of the most common causes of reduction gear failure is gear wear caused by scoring as a result of
A. surface fatigue of the gears
B. an inadequate lube oil film
C. plastic flow of the gears
D. fretting corrosion from water
4. [单选题]离心泵转速降低时( )。
A. 流量减少
B. 有效汽蚀余量增加
C. 必需汽蚀余量减少
D. 以上全部
5. [单选题]The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the
A. Navigation Log Book
B. Engine Room Log Book
C. Oil Record Book
D. Muster List
