单项选择题

Horton Point Light（）.

A.is 14 feet above sea level
B.has a fixed green light
C.is shown from a white square tower
D.is synchronized with a radio beacon

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单项选择题

A.off-center
B.on the centerline
C.completely flooded
D.open to the sea above and below the waterline

单项选择题

A.air bottle for breathing
B.whistle and hand held flare
C.whistle，strobe light and reflective tape
D.whistle，hand held flare and sea dye marker

单项选择题

A.air bottle for breathing
B.orange smoke canister
C.whistle，light and retroreflective material
D.sea dye marker