單項(xiàng)選擇題

A sufficient amount of chain must be veered when anchoring a vessel to ensure（）.

A.the vessel has enough room to swing while at anchor
B.the anchor flukes bite into the ocean bottom
C.there is a sufficient scope of chain to keep the anchor on the bottom
D.there is more chain out than there is in the chain locker

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單項(xiàng)選擇題

A strong，often violent，northerly wind occurring on the Pacific coast of Mexico，particularly during the colder months，is called（）.

A.Tehuantepecer
B.Papagayo
C.Norther
D.Pampero

單項(xiàng)選擇題

A stretch where the channel changes from one side of the river to the other is called a （）.

A.bifurcation
B.transit
C.crossing
D.changeover

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A sufficient amount of chain must be veered when anchoring a vessel to ensure（）.

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A strong，often violent，northerly wind occurring on the Pacific coast of Mexico，particularly during the colder months，is called（）.

A stretch where the channel changes from one side of the river to the other is called a （）.

A strong，often violent，northerly wind occurring on the Pacific coast of Mexico，particularly during the colder months，is called（）.