單項(xiàng)選擇題Coast Guard approved buoyant work vests（）.

A.may be substituted for 10 percent of the required life preservers
B.should be stowed adjacent to lifeboats and emergency stations
C.may be used by boat crews and line handlers during lifeboat drills
D.should be used when carrying out duties near a weather deck's edge


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2.單項(xiàng)選擇題An aircraft has indicated that he wants you to change course and follow him. You cannot comply because of an emergency on board. Which signal should you make?（）

A.Fire a red flare at night or a red smoke signal by day
B.Send the Morse signal "N" by flashing light
C.Make a round turn (360°) and resume course
D.Make an "S" turn (hard right then hard left) and resume course

3.單項(xiàng)選擇題All self-propelled vessels on an international voyage must be equipped with how many Emergency Position Indicating Radio beacons (EPIRB)? （）

A.One approved Category 1 EPIRB
B.Three approved Category 1 EPIRBs
C.One approved Class B EPIRB
D.Two approved Class B EPIRBs

4.單項(xiàng)選擇題After having activated the emergency position indicating radio beacon，you should（）.

A.turn it off for 5 minutes every half-hour
B.turn it off and on at 5 minute intervals
C.turn it off during daylight hours
D.leave it on continuously

5.單項(xiàng)選擇題After an explosion，repair of emergency machinery and services should be accomplished（）.

A.after control of fire，flooding，and structural repairs
B.immediately，before the emergency is under control
C.after control of fire，but before control of flooding
D.after stability is restored