题目内容

对人体有毒的化合物，应该制定（）

A. 最低需要量
B. 最高需要量
C. 最高容许限量
D. 最低容许限量

查看答案

搜索结果不匹配？点我反馈

更多问题

如何进行多元阅读理念

精神环境的含义

Suppose you use your university’s computer lab to print your research papers. If this computer lab contains desktop computers that use a Wi-Fi hotspot to connect to the printer in the center of the room, it is a ________ lab.

A. mobile
B. wireless
C. mobile and wireless
D. a waste of resources

Suppose you use your university’s computer lab to print your research papers. If this computer lab contains laptop computers that use a Wi-Fi hotspot to connect to the printer in the center of the room, it is a ________ lab.

A. mobile
B. wireless
C. mobile and wireless
D. a waste of resources