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單項選擇題

What’s wrong（）the winch?

A.for
B.with
C.to
D.on

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單項選擇題

When out of sight of land, a ship’s position can be found by using（）.

A.the coastal navigation
B.the celestial navigation
C.traditional navigation
D.the great circle navigation

單項選擇題

When visibility is reduced to about 5 miles, we say that visibility is（）.

A.very good
B.good
C.poor
D.moderate

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