抑制二氢叶酸合成酶的药物是(). A.青霉素 B.磺胺甲唑 C.甲氧苄啶 D.红霉素 发布时间:2017-07-19 17:22 │ 来源:www.tikuol.com 题型:单项选择题 问题: 抑制二氢叶酸合成酶的药物是().A.青霉素B.磺胺甲唑C.甲氧苄啶D.红霉素E.异烟肼
题型:单项选择题 -I am going out this evening. -_______. You should finish your English project first.[ ]A. I disagreeB. I'm sure C. I think so D. Not at all 查看答案
题型:单项选择题 有以下程序: #include <stdio.h> main() int x=1, y=0, a=0, b=0; switch (x) case 1: switch (y) case 0:a++; break; case 1:b++; break; case 2:a++; b++; break; case 3:a++;b++; printf("a=%d,b=%d\n",a,b); 程序的运行结果是( )。A.a=1,b=0 B.a=2,b=2C.a=1,b=1 D.a=2,b=1 查看答案