硬脂酸镁属于
A．湿润剂B．吸收剂C．黏合剂D．崩解剂E．润滑剂
参考答案：E
解析：硬脂酸镁可作制备片剂的润滑剂，故选E。
营销部（科）和纪检部门负责市场开发的绩效评估。
— ______ does he swim?
— He swims twice a week.
[ ]
A. How long
B. How soon
C. How old
D. How often
