A.at
B.for
C.in
D.on
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A.on
B.by
C.in
D.for
A.stop down
B.speed down
C.slow down
D.down slow
A.SOS，ZZZ，XXX
B.SOS，UUU，SSS
C.SOS，XXX，TTT
D.SOS，TTT，UUU
A.final topping off is occurring
B.first starting to receive fuel
C.hoses are being blown down
D.hoses are disconnected and being capped
A.at all times
B.during evening hours
C.unless another person is present
D.during drilling operations
最新試題
The radiotelegraphy safety messages for condition indicating distress，urgency and safety，respectively，are（）.
Which mooring line is likely to undergo the most strain when docking a ship under normal conditions?（）
Which may ignite fuel vapors?（）
To safely anchor a vessel there must be sufficient scope in the anchor cable. Scope is the ratio of（）.
If passengers are on board when an abandon ship drill is carried out，they should（）.
The most likely time for oil pollution while bunkering is when（）.
Which statement is TRUE about placing the eyes of two mooring lines on the same bollard?（）
Which method of adjusting mooring lines is MOST useful for leaving a boat free to rise and fall with the tide?（）
Which statement is TRUE about nylon line?（）
Keep clear（）the buoy.