硝酸、盐酸和氢氟酸()。
参考答案:使用时应在毒气柜中进行操作
胃痞的发生,于下列哪些因素有关()
A.脉浮紧,而复下之
B.胃中不和
C.脾湿有余
D.怒气暴伤
E.脏寒生满病
They had a party _______ the evening of October l. [ ]
A. in
B. at
C. on
D. /