单项选择题
A.50.8 B.38.1 C.76.2 D.84.6
A.刷涂 B.辊涂 C.刮涂 D.浸涂
A.0.5~1.5 B.1.5~2.5 C.2.5~3.5 D.3.5~4.5
A.1/3 B.1/2 C.2/3 D.3/4
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