單項(xiàng)選擇題You can determine that a C02 fire extinguisher is fully charged by（）.
A.looking at the gage
B.checking the nameplate data
C.weighing by hand
D.weighing on a properly calibrated scale
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1.單項(xiàng)選擇題You detect oil around your tank vessel while discharging. The first thing to do is（）.
A.try to find out where the oil is coming from
B.call the master
C.have the pumpman check the discharge piping
D.shut down operations
2.單項(xiàng)選擇題You have abandoned ship in tropical waters. Which procedure(s) should be used during a prolonged period in a raft?（）.
A. Wet clothes during the day to decrease perspiration
B.Get plenty of rest
C.Keep the entrance curtains open
D.All of the above
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Which of the following shall not the officers in charge of the navigational watch do?（）
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