单项选择题

The distance traveled by the center of gravity perpendicular to the original course is（）.

A.transfer
B.advance
C.kick
D.tactical diameter

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单项选择题

The rule state that a vessel overtaking another vessel is relieved of her duty to keep clear when（）.

A.she is forward of the other vessel’s beam
B.the overtaking situation become crossing situation
C.She is past and clear of the other vessel
D.the other vessel is no longer in sight

单项选择题

If a hurricane several hundred miles away is moving in your general direction your barometer would（）.

A.start to rise rapidly
B.start to fall gradually
C.rise slowly,begin pumping and then start a slow,steady fall
D.remain steady