A.getting
B.to get
C.to have got
D.for getting
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A.at
B.in
C.on
D.over
A.a blast of from five to seven seconds' duration
B.a blast of from five to six seconds' duration
C.a blast of from four to six seconds' duration
D.a blast of from six to seven seconds' duration
A.at
B.for
C.in
D.on
A.on
B.by
C.in
D.for
A.stop down
B.speed down
C.slow down
D.down slow
最新試題
To safely anchor a vessel there must be sufficient scope in the anchor cable. Scope is the ratio of（）.
Three SHORT BLASTS mean（）.
Which spoken emergency signal would you use to call a boat to come assist a man overboard?（）
Which statement is TRUE concerning radiotelephones on board towing vessels?（）
The winch at Hatch No.3 is（）trouble.
Which may ignite fuel vapors?（）
The most likely time for oil pollution while bunkering is when（）.
In the International Code of signals，a group of three letters indicates（）.
Which measure should NOT be taken to reduce the pounding of a vessel in a head sea?（）
Which tool is used to open the strands of fiber lines when making an eye splice?（）