单选题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 daylightB switching the light on only when necessaryC taking no action as there is no way on sa

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单选题

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

unscrewing the bulb during the daylight

switching the light on only when necessary

taking no action as there is no way on saving power

taking no action as they shut off automatically in daylight

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Jae Kwon gave examples in Paragraph 4_________.A. to show chemical batteries are widely applied.B. to introduce nuclear batteries can be safely used.C. to describe a nuclear-powered system.D. to introduce various energy sources.

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单选题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 daylightB switching the light on only when necessaryC taking no action as there is no way on sa

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