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單項(xiàng)選擇題

A. Emergency power supply.
B. Quick-close device.
C. Emergency squad.
D. derricks.

你可能感興趣的試題

A. Lifeboat.
B. Life-raft .
C. Life rail.
D. Lifebuoy.

A. Put on my life-jacket.
B. Go to muster station.
C. A+B
D. Rig the lifeboat and report.

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