單項選擇題

The main （）(保護層) is paint.

A. primer boat
B. protective coat
C. top coat
D. under coat

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單項選擇題

The purpose of lookout is to prove the （）(安全) of a ship.

A.stern
B.safety
C.saw
D.spanner

單項選擇題

Where is the （）(撬棍)？

A.hacksaw
B.needle
C.crowbar
D.hammer