发酵液固液分离中，离心主要用于（）的菌体分离
A.霉菌
B.酵母
C.细菌
D.放线菌
参考答案：B, C
He has a habit of keeping his arms _____ when talking to others, which I personally think _____ impolite
to his audience. [ ]
A. to be folded; it
B. being folded; X
C. folded; it
D. folded; X
太上皇、皇太后、高皇帝指（）。
A.谥号
B.庙号
C.尊号
D.年号
talking to others, which I personally think _____ impolite