菌痢的潜伏期为（） A.1～2天 B.3～4天 C.4～5天 D.6～7天 E.7天

企业在提取法定盈余公积金前不得向投资者分配利润。( )

下列寒性腹痛的疼痛特点（）

A.腹部胀痛，攻窜不定

B.腹痛绵绵，时作时止

C.腹部胀满，疼痛拒按

D.腹痛急暴，得温痛减

E.饥则痛甚，得食稍减

短文改错 （共10小题，每小题1.5分，满分15分）

My summer travel started terribly. I was at the Shanghai Railway Station buy a ticket to Hangzhou. I was going to visit a friend here and after that I would go to Xiamen for long holiday. I bought my ticket but turned around to pick up my bag form the floor and then I realized that someone had stolen it. Luckily I had all my money on my pocket, but the only clothes I had was those I had on. It felt very strange to travel without any luggages. When I finally arrived at my friend he lent to me lots of clothes. I feel very happy that I could change my clothes at last.

如果经营杠杆系数为2，财务杠杆系数为3，则下列说法正确的有（）。

A.如果销量增加10％，息税前利润将增加20％

B.如果息税前利润增加20％，每股利润将增加60％

C.如果销量增加10％，每股利润将增加60％

D.如果每股利润增加30％，销量需要增加5％

硝酸甘油的主要药理作用是

A．降低心肌自律性

B．抑制心肌收缩力

C．抑制血小板聚集

D．增加心排出量

E．松弛血管平滑肌，改善心肌血液供应