單項(xiàng)選擇題

Air circulation is caused or affected by（）.

A.the rotation of the earth on its axis
B.convection currents caused by differences in radiant heating between equatorial and polar regions
C.mountain ranges
D.All of the above

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單項(xiàng)選擇題

Aids to navigation marking the intracoastal waterway can be identified by（）.

A.the letters ICW after the aid's number or letter
B.yellow stripes，squares，or triangles marked on them
C.white retroreflective material
D.the light characteristic and color for lighted aids

單項(xiàng)選擇題

After you get underway，what is the first river gage you will pass? （）

A.Bayou Sara
B.Baton Rouge
C.Head of Passes
D.Red River Landing

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Air circulation is caused or affected by（）.

你可能感興趣的試題

Aids to navigation marking the intracoastal waterway can be identified by（）.

After you get underway，what is the first river gage you will pass? （）

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