清热解毒，凉血消肿的药物是（）
A.马勃
B.白花蛇舌草
C.紫花地丁
D.白头翁
E.山豆根
参考答案：C
肺炎支原体感染首选哪一类抗生素（）
A.青霉素类
B.头孢类
C.大环内酯类
D.奎诺酮类
E.四环素类
Flames from small leaks of LFG may be extinguished by（）.
A.utilizing carbon dioxide or dry chemical fire extinguishers
B.utilizing soda and acid fire extinguishers
C.blowing the flames out
D.letting it burn itself out
