试题与答案

氯化聚乙烯防水卷材的主体原料一氯化聚乙烯树脂中的含氯量为()。A.20%~30% B

题型:单项选择题

题目:

氯化聚乙烯防水卷材的主体原料一氯化聚乙烯树脂中的含氯量为()。

A.20%~30%

B.30%~40%

C.40%~50%

D.50%~60%

答案:

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