在单元制一级复床除盐系统中，除盐水的电导率及PH值普遍上升，说明（）。
A.阴、阳床都失效
B.阴床都失效
C.阳床都失效
参考答案：C
患者咳逆气急，身热不解，口渴有汗，舌苔薄黄，脉浮而数。治疗应首选的方剂是（）。
A.麻黄汤
B.定喘汤
C.苏子降气汤
D.麻黄杏仁甘草石膏汤
E.三子养亲汤
People often have this belief ___development is bad for the environment, but this does not have to be true.
A which B whose C that D when
