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单选题
Clean the opaque plastic surfaces.
A
A.Clean the elastic surfaces that are transparent.
B
B.Clean the plastic surfaces that are not transparent.
C
C.Clean the plastic surfaces that are not vague.
答案解析
正确答案：B
解析：
这道题是关于清洁不透明塑料表面的问题。选项A说要清洁透明的弹性表面，这与题目描述的不透明塑料表面不符，所以不是正确答案。选项C说要清洁不模糊的塑料表面，这也不符合题目描述，因为题目没有提到模糊的问题。所以正确答案是B，清洁不透明的塑料表面。
相关知识点：
清洁不透明塑料表面
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