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單項(xiàng)選擇題

The aft part of a vessel on the port side is called port（）.

A. port stern
B. quarter
C. aft quarter
D. starboard

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- What kind of paint for the hull?
-（）.

A.OK
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The first coat to a bare metal surface is the（）.

A.primer
B.undercoat
C.topcoat
D.thinner