单项选择题
After operation, drop the control levers into stowing hole, and （）(停止)the electric motor.
A.start B.stop C.move D.shift
单项选择题 （）(高速)operation and rough handling of covers are dangerous.
单项选择题 In order to avoid shock, reduce the speed by （）(低速控制器)when the cover comes near the stoppers.
单项选择题 When the weather becomes bad, the hatch covers will be （）(关闭).
