单项选择题
Red lights may appear on（）.
A.horizontally banded buoys
B.vertically striped buoys
C.yellow buoys
D.spherical buoys
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相关考题
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单项选择题
Preventer bars are fitted on lifeboat releasing hooks to prevent（）.
A.the falls from unhooking if the releasing gear is operated accidentally while the boat is being lowered
B.operation of the release lever until the boat is waterborne
C.the falls from rehooking after they have been released
D.accidental unhooking when the falls become slack -
单项选择题
Please tell your tallymen to（）out the marks in the holds during discharging.
A.pick
B.choose
C.sort
D.decide -
单项选择题
Please shift some light cargo to fill it（）.
A.in
B.up
C.over
D.with
