A.Carbon dioxide
B.Dry chemical
C.Foam
D.All of the above
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A.observer's meridian
B.Greenwich meridian
C.body's meridian
D.zenith distance
A.blue rotating light
B.intermittent flashing amber/yellow light
C.flashing white light
D.flashing sidelight
A.located in an air-conditioned area
B.mounted in the passenger compartment
C.protected by a collision bulkhead
D.permanently mounted
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
A.vessel laying cable
B.vessel towing a submerged object
C.vessel not under command
D.air cushion vessel
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Explosive and flammable gasses are most likely to be encountered on a vessel（）.
All OSV personnel should be familiar with survival craft（）.
An aneroid barometer on a boat should always be（）.
An “on-load” release system on a survival craft means the cable can be released（）.
In handling break bulk hazardous materials，it is forbidden to use（）.
An entry of water，gas，oil，or other formation fluid into the wellbore is called a（）.
An airplane should NOT send which signal in reply to a surface craft?（）
An icebreaker displaying a flag hoist which consists of the code letters “WO” (Whiskey Oscar) is indicating that（）.
An example of a grade C product is（）.
An all-round flashing yellow light may be exhibited by a(n)（）.