治疗支气管哮喘的药物中有可能引起心律失常的药物是
A.舒喘灵
B.氨茶碱
C.地塞米松
D.色甘酸二钠
E.异丙托溴胺
参考答案:A,B
中和反应地实质是()。
A.H++OH-==H2O;
B.PH改变;
C.生成盐类物质;
D.化合价不变。
European conservatives, until the end of the 19th century, rejected democratic principles and institutions. Instead they opted for monarchies or for authoritarian government.()
A. chose
B. constructed
C. conceived
D. conserved