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單項(xiàng)選擇題

Vessels should not anchor or trawl in the vicinity of pipelines and are（）in the pipeline area shown on the chart.

A.Prohibit to anchor
B.Prohibited to anchor
C.Prohibited from anchor
D.Prohibited from anchoring

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單項(xiàng)選擇題

The range of a light on Admiralty Charts is normally the（）.

A.nominal range
B.luminous range
C.geographical range
D.visible range

單項(xiàng)選擇題

The height of a tide can be increased by（）.

A.A storm surge
B.A high pressure area
C.The jet stream
D.A cold front

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