单选题The lights on the outside of the canopy on an inflatable liferaft operate（）.Aby turning the globe clockwiseBby a switch at each lightCby a light sensorDautomatically when the raft is inflated
单选题
The lights on the outside of the canopy on an inflatable liferaft operate（）.
A
by turning the globe clockwise
B
by a switch at each light
C
by a light sensor
D
automatically when the raft is inflated
参考解析
解析：
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