On a rigid liferaft (SOLAS B pack) which is equipped with all of the required equipment you may NOT find a（）.

单项选择题In accordance with SOLAS，the batteries that power interior lighting in inflatable liferafts can be made to last longer by（）.

A.unscrewing the bulb during the daylight
B.switching the light on only when necessary
C.taking no action as there is no way on saving power
D.taking no action as they shut off automatically in daylight

单项选择题In（）convention，a vessel which carries more than 12 passengers shall be deemed as a passenger ship.

A.COSCO
B.STCW
C.SOLAS
D.MARPOL

单项选择题How many operators are needed／required on board according to the provisions of the International Convention for the Safety of Life at Sea，1974?（）.

A.4 operators
B.3 operators
C.2 operators
D.1 operator

单项选择题Halon gas will decompose and may form very hazardous toxic fumes when discharged（）.

A.directly on flames
B.at room temperature
C.in an extremely cold climate
D.None of the above

单项选择题Goods of an inflammable，explosive or dangerous nature to the shipment whereof the carrier，master or agent of the carrier，has not consented，with knowledge of their nature and character，may at any time before discharge，（）at any place or destroyed or rendered innocuous by the carrier without compensation.

A.be loaded
B.be landed
C.be lended
D.be loaned