滴定管一般分为两种,一种是具塞滴定管,常称()式滴定管;另一种是无塞滴定管,常称()式滴定管。
参考答案:酸;碱
血浆晶体渗透压增高可致 ()
A.FSH升高
B.LH下降
C.TSH升高
D.ACTH下降
E.ADH升高
They must be visiting the Great Wall of China, _____? [ ]
A. mustn't they
B. must they
C. aren't they
D. are they