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單項(xiàng)選擇題

After operation, drop the control levers into stowing hole, and （）the electric motor.

A.start
B.stop
C.move
D.open

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單項(xiàng)選擇題

Don’t operate two or more hatch （）at the same time.

A.caps
B.levers
C.covers
D.coamings

單項(xiàng)選擇題

（）-speed operation and rough handling of covers are dangerous.

A.Low
B.High
C.Slow
D.Quick

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