微晶纤维素为常用片剂辅料，其缩写和用途为
A．CMC黏合剂
B．CMS崩解剂
C．CAP肠溶包衣材料
D．MCC干燥黏合剂
E．MC填充剂
参考答案：D
I am quite busy _____ weekends I have to go to English class _____ Sunday mornings and dancing class
after lunch. [ ]
A. at; in
B. in; in
C. in; on
D. on; on
蒸气锅炉在什么情况下采取紧急停炉？
