单项选择题
A.stop the winch just before the craft reaches the final stowage position B.limit the amount of cable on the drum C.limit the ascent rate D.stop the winch in case the craft weighs too much
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
A.automatically as the liferaft inflates B.with a switch near the boarding handle C.at night because the light has a photosensitive switch D.by screwing the bulb in after the raft is inflated