单项选择题
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
Free communication will adversely affect transverse sta...
单项选择题Free communication will adversely affect transverse stability only when the flooded space is （）.
A.off-center B.on the centerline C.completely flooded D.open to the sea above and below the waterline
An immersion suit should be equipped with a/an（）.A.air ...
单项选择题An immersion suit should be equipped with a/an（）.
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
An immersion suit must be equipped with a(n)（）.A.air bo...
单项选择题An immersion suit must be equipped with a(n)（）.
A.air bottle for breathing B.orange smoke canister C.whistle，light and retroreflective material D.sea dye marker
