底漆用于出白金属表面， 防止其生锈。（）
- A、Topside paint is applied to a bare surface to give protective against rust.
- B、Undercoat is applied to a bare surface to give protection against rust.
- C、Primer coat is applied to a bare surface to give protection against rust.
- D、Topcoat is applied to a bare surface to give protection against rust.
正确答案:C
答案解析:有
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