当企业净利润率高于长期债务成本时，加大长期债务的比重可使企业获得财务杠杆收益，从而提高企业权益资本的收益率。( )
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炒后缓和寒泻之性的是( )
A. 蒲黄
B. 大蓟
C. 决明子
D. 山楂
E. 荆芥
蜈蚣的炮制方法是( )
A. 明煅
B. 煅淬
C. 提净法
D. 水飞
E. 烘焙
蛤粉炒时，药物与辅料的比例为( )
A. 100:10～15
B. 100:20
C. 100:25～30
D. 100:30～50
E. 100:40～50
Questions 11 to 18 are based on the conversation you have just heard.
A. It is having financial trouble.
B. Its chemistry program is very popular.
C. The fees for the chemistry course have been reduced.
D. The number of students has doubled.
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