题目内容

以下选项不是评价空气过滤器特性指标的是()。

A. 面速
B. 初阻力
C. 容尘量
D. 粒径

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A. 正确
B. 错误

A. 正确
B. 错误

A. 正确
B. 错误

A. No, I don't think so.
B. Yes, he's very well.
C. Yes, he was there yesterday.
D. No, I was ill yesterday.