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
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