单项选择题

The cargo fall over the dock is called the（）.

A.burton fall
B.down fall
C.hatch fall
D.stay fall

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单项选择题

The Captain of the Port has closed to navigation，and buoyed，a section of a harbor. These buoys would be painted（）.

A.red or green to conform with the other lateral aids
B.red and green horizontally-striped
C.solid yellow
D.white with orange marks

单项选择题

Red lights may appear on（）.

A.horizontally banded buoys
B.vertically striped buoys
C.yellow buoys
D.spherical buoys

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