根据下表列出的氯的含氧酸跟它对应的氧化物(叫酸酐)的化合价关系。判断HNO3的酸酐是
A.NO
B.N2O5
C.N2O3
D.NO2
答案:B
A friendly basketball match between teachers and students _________ tomorrow afternoon.
Anybody is welcome. [ ]
A. was held
B. will be held
C. is held
D. must be held
男,30岁,工人。患者近3年来经常打喷嚏、流清涕、鼻塞,每遇风冷即发,平素畏风自汗,易感冒,气怯声低,余无特殊。检查鼻粘膜色淡,下甲肿胀,舌淡苔白,脉虚弱。
其选用的方剂为()。
A.温肺止流丹
B.补中益气丸
C.金匮肾气丸
D.参苓白术散
E.真武汤