The house___we live is not big. [ ]
A. in that
B. which
C. in which
D. that
答案:C
阿司匹林片的测定
A.不溶性微粒B.酸值与皂化值C.溶出度检查D.融变时限检查E.溶化性检查
油压机进行工作时,滑块下降下行速度是()
A.减速
B.匀速
C.加速
D.无规律