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單項(xiàng)選擇題

A. Life-jacket and lifebuoy
B. Freeboard
C. Telemeter
D. Draft

你可能感興趣的試題

A. cutting off the supply of oxygen
B. removing the fuel
C. spraying with water
D. adding oxygen

A.oxygen
B.carbon dioxide
C.H₂O
D.H₂

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