一般在空间排阻色谱法中先流出色谱柱的是（）分子。
A.小
B.大
C.强极性
D.弱极性
参考答案：B
some of the beer here— perhaps you will enjoy it.
A．Try
B．Trying
C．To try
D．Have tried
零上12℃（+12℃）和零下12℃（-12℃）是两种相反意义的量。[ ]
