单项选择题
A.thinner B.thin C.thicker D.tight
Paint should be evenly （）(分布).A.spreadB.suppliedC.distr...
单项选择题Paint should be evenly （）(分布).
A.spread B.supplied C.distributed D.spanner
The main （）(保护层) is paint.A. primer boatB. protective c...
单项选择题The main （）(保护层) is paint.
A. primer boat B. protective coat C. top coat D. under coat
The purpose of lookout is to prove the （）(安全) of a ship...
单项选择题The purpose of lookout is to prove the （）(安全) of a ship.
A.stern B.safety C.saw D.spanner
