题目内容

适用于含硫、含硫和含氮化合物的分析的气相色谱检测器是 ;适用于各种有机化合物的分析,对碳氢化合物灵敏度高的检测器是 。

查看答案
更多问题

气液色谱固定液按其相对极性分类,相对极性P为0的是,相对极性P为100的是。

气固色谱固定相中常用的五种吸附剂有、、、和。

毛细管柱气相色谱具有以下四个特点:、、和。

(ch10) For the national tourism market, the following statements correctly include ()?

A. The main factor restricting the development of tourism is insufficient demand
B. The unreasonable and unbalanced results of supply side are the main problems of tourism development
C. The downturn of international inbound tourism shows that the domestic tourism supply system needs to be improved
D. The popularity of outbound tourism shows that the domestic people have a strong demand for tourism

答案查题题库