A.shall
B.should
C.may
D.would
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A.of
B.to
C.on
D.with
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
最新試題
Which may ignite fuel vapors?（）
The winch at Hatch No.3 is（）trouble.
Which mooring line has the least elasticity?（）
The ship will be（）demurrage soon.
The radiotelegraphy safety messages for condition indicating distress，urgency and safety，respectively，are（）.
Keep clear（）the buoy.
Should the vessel have no deratisation certificate at the time of her delivery，she（）be held to be unseaworthy.
Which statement is TRUE concerning radiotelephones on board towing vessels?（）
Which spoken emergency signal would you use to call a boat to come assist a man overboard?（）
To safely anchor a vessel there must be sufficient scope in the anchor cable. Scope is the ratio of（）.