粉尘的分散度是指粉尘整体组成中()所占的百分比。A:粒级最细的尘粒B:粒级最大的尘粒C:各种粒级的尘粒D:各种物质的尘粒

作者: rantiku 人气: - 评论: 0
问题 粉尘的分散度是指粉尘整体组成中()所占的百分比。
选项 A:粒级最细的尘粒 B:粒级最大的尘粒 C:各种粒级的尘粒 D:各种物质的尘粒
答案 C
解析

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