Wh/2()
A.分配系数
B.容量因子
C.保留时间
D.峰宽
E.半高峰宽
参考答案:E
解析:本组题考查色谱柱理论塔板数的计算公式。tk代表保留时间,Wh/2为半高峰宽。
—My sports shoes are _______ out.
—How long have you _______ them? [ ]
A. worn; bought
B. wearing; had
C. wearing; bought
D. worn; had
儒家思想有利于构建和谐的社会人际关系,缓和阶级矛盾,下列观念与之相关的有
①仁者,爱人 ②严刑峻法 ③民为贵,杜稷次之,君为轻 ④兼爱、非攻
A.①③
B.②④
C.①④
D.②③