-_____ is the baseball?
-It's under the bed.[ ]
A. How
B. Where
C. What
D. Who
答案:B
ATC的定义?
慢性支气管炎并发肺部感染的治疗,下列哪项不恰当()
A.应用敏感的抗生素
B.菌苗注射
C.应用祛痰药物
D.应用支气管扩张药
E.雾化吸入稀释痰液