單項(xiàng)選擇題Seawater may be used for drinking().

A.under no conditions
B.at a maximum rate of two ounces per day
C.if gathered during or immediately after a hard rain
D.after mixing with an equal quantity of fresh water


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1.單項(xiàng)選擇題Once you have established the daily ration of drinking water in a survival situation,how should you drink it?()

A.Small sips at regular intervals during the day
B.The complete daily ration at one time during the day
C.One-third the daily ration three times daily
D.Small sips only after sunset

2.單項(xiàng)選擇題On an oceangoing vessel,for each person a lifeboat (without desalting kits) is certified to carry,the boat must be supplied with().

A.2 pounds of condensed milk
B.a signaling whistle
C.3 litres of water
D.a life preserver

3.單項(xiàng)選擇題On a lifeboat equipped with Rottmer-type releasing gear,turning the releasing lever releases().

A.the painter
B.the after boat fall only if the boat is waterborne
C.both falls at the same time only if the boat is waterborne
D.both falls at the same time even if the boat has not reached the water

4.單項(xiàng)選擇題Number 3 lifeboat would be().

A.the forward boat on the starboard side
B.behind boat number 1 on the port side
C.behind boat number 1 on the starboard side
D.behind boat number 2 on the port side

5.單項(xiàng)選擇題Limit switches().

A.control the descent rate of a lifeboat
B.control the ascent rate of a lifeboat
C.cut off power to the winch when the lifeboat nears the final stowed position
D.cut off power to the winch when the lifeboat reaches the davit bumpers