單項選擇題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


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3.單項選擇題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

5.單項選擇題Due to the nature of a vessel’s construction for a particular trade，it does not fully comply with the provisions of SOLAS. Where will this be indicated?（）.

A.On the Exemption Certificate
B.On the reverse of the particular SOLAS certificate affected
C.On the face of the Certificate of Inspection
D.Nowhere； the vessel must comply to engage in international trade