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Engine_2014 : Engineering Safety - 1103/2355
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On most makes of inflatable life rafts, the batteries to operate the light on the inside of the rafts can be made to last longer by __________ .
A) unscrewing the bulb during the daylight
B) operating the "off switch" for the light during the daylight
C) taking no action as there is no way of preserving power
D) removing the batteries during the daylight
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