A.at all times
B.during evening hours
C.unless another person is present
D.during drilling operations
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A.shall
B.should
C.may
D.would
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
最新試題
In order to prevent galvanic corrosion，an aluminum boat must be insulated from the davits and gripes. Which of the following is acceptable as an insulator?（）
The winch is liable（）worn-out in this way.
In the International Code of signals，a group of three letters indicates（）.
Which statement is TRUE with respect to the elasticity of nylon mooring lines?（）.
The winch at Hatch No.3 is（）trouble.
Should the vessel have no deratisation certificate at the time of her delivery，she（）be held to be unseaworthy.
In battery charging rooms，ventilation should be provided（）.
I would be very much（）if you could arrange for a radio technician to come on board as soon as possible for my radar repair.
The term PROLONGED BLAST refers to（）.
Smoking in bed on a ship is prohibited（）.