A.of
B.to
C.on
D.with
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A.to
B.on
C.of
D.for
A.urgency or an emergency
B.the vessel's national identity signal
C.a group from the general signal code
D.a group from the medical signal code
A.Hard rubber
B.Canvas
C.Leather
D.Sponge rubber
A.at the lowest point
B.near the batteries
C.at the highest point
D.only when charging is in progress
A.take part
B.watch
C.go to their quarters
D.stay out of the way and do what they want
最新試題
In battery charging rooms，ventilation should be provided（）.
Which term describes a part of a natural fiber line?（）
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?（）
To safely anchor a vessel there must be sufficient scope in the anchor cable. Scope is the ratio of（）.
Which method of adjusting mooring lines is MOST useful for leaving a boat free to rise and fall with the tide?（）
Which measure should NOT be taken to reduce the pounding of a vessel in a head sea?（）
Which statement is TRUE concerning radiotelephones on board towing vessels?（）
Which mooring line has the least elasticity?（）
Keep clear（）the buoy.