在通常情况下能大量共存,并且可以用浓硫酸干燥的一组气体是( )
A.SO2、H2S、Cl2
B.NO、O2、Cl2
C.SO2、H2、O2
D.HCl、CO、NH3
答案:C
Generally, in China the car market is between the imported cars and the home-made cars. The former are quite expensive while the latter much cheaper.
A.limited
B.separated
C.divided
D.parted
腹痛临床应注意以下哪几点
A.腹痛的部位
B.腹痛的性质
C.与遗传的关系
D.诱发因素
E.与体位的关系