单项选择题

An aneroid barometer on a boat should always be（）.

A.located in an air-conditioned area
B.mounted in the passenger compartment
C.protected by a collision bulkhead
D.permanently mounted

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An anchored vessel is servicing an aid to navigation an...

单项选择题An anchored vessel is servicing an aid to navigation and is restricted in her ability to maneuver. Which lights will she show? （）

A.Three lights in a vertical line，the highest and lowest red and the middle white，and anchor lights
B.Three lights in a vertical line，the highest and lowest red and the middle white，ONLY
C.Anchor lights ONLY
D.Anchor lights and sidelights ONLY

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单项选择题An all-round flashing yellow light may be exhibited by a(n)（）.

A.vessel laying cable
B.vessel towing a submerged object
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D.air cushion vessel

An airplane should NOT send which signal in reply to a ...

单项选择题An airplane should NOT send which signal in reply to a surface craft?（）

A.Opening and closing the throttle
B.Rocking the wings
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D.Flashing Morse T

固体散装危险品与BC规则

An aneroid barometer on a boat should always be（）.