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單項選擇題

Vessels approaching from west will（）pilot in approximate position 015108N/1033008E.

A.obtain
B.select
C.request
D.pick up

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單項選擇題

Vessels are advised（）clear of this area.

A.keep
B.keeping
C.to keep
D.to keeping

單項選擇題

Vessels are warned（）in the area enclosed by pecked lines owing to the existence of numerous telegraph cables.

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

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