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單項選擇題

Upon arrival at the discharging port, the inert gas system is（）.

A.turned on
B.turning on
C.turn on
D.to turn on

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單項選擇題

Vessels are required（）Singapore Port Service when passing the points indicated.

A.communicating with
B.to communicate with
C.be communicated
D.will communicate

單項選擇題

Vessels are warned（）in this area.

A.to not anchor
B.to anchor not
C.not to anchor
D.not anchor to

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