粉尘中游离二氧化硅的测定方法通常为三类即岩相法、化学分析法和()。
参考答案:物理法
造成皮肤产生糜烂和水疱的化学毒剂是()
A.氯气
B.芥子气
C.西埃斯和亚当剂
D.光气和双光气
E.燃烧不全化学气体
P is considered as the intersection of psychology and linguistics, drawing equally upon the language and the mind or brain.