流量孔板是测量进入焦炉或焦炉一侧的()
A.煤气流量
B.空气流量
C.废气量
参考答案:A
— Why do some people ______ drugs?
— As far as I know, they want to change the way they feel. [ ]
A. plot
B. violate
C. abuse
D. resist
元代陶瓷制作最有成就的是()和()的烧成。