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
The ship is not very stable，please（）when making a turn.
The winch at Hatch No.3 is（）trouble.
Which mooring line is likely to undergo the most strain when docking a ship under normal conditions?（）
Keep clear（）the buoy.
I hope you don’t mind（）the radar for us in a short time.
The most likely time for oil pollution while bunkering is when（）.
Good anchorage may be obtained anywhere in this water area，the bottom being generally mud and sand，vessel may have（）.
The ship is now down（）head.
In battery charging rooms，ventilation should be provided（）.
Should the vessel have no deratisation certificate at the time of her delivery，she（）be held to be unseaworthy.