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单选题
干燥的喷涂层可以用细砂纸打磨以获得更光滑的表层。
A
The arid welding coat may be polished with thin abrasive paper to hold a smoother layer.
B
The waterless painting coat may be worn with precise abrasive paper for a smoother surface.
C
The dried spray coat may be sanded with fine sandpaper to obtain a smoother finish.
答案解析
正确答案：C
相关知识点：
干燥喷涂层可用砂纸打磨
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