To obtain a satisfactory result, one must apply two ______ of paint on a dean su

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问题 To obtain a satisfactory result, one must apply two ______ of paint on a dean surface.

选项 A、coats
B、levels
C、times
D、courses

答案 A

解析 coat 意为“覆盖物、层”；level 意为“(建筑物的)楼层”；times 意为“次、回”；courses意为“(一层)砖面；一排”。

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