IMViC试验包括()
A.甲基红试验
B.糖发酵试验
C.吲哚试验
D.枸橼酸试验
E.VP试验
参考答案:A, C, D, E
The question came up at the meeting ________ we had enough money to do the research. [ ]
A. whether
B. that
C. if
D. what
欲使某单底物米氏酶促反应速度达到Vmax的80%,其底物浓度应达到酶Km的倍()。
A.6
B.2
C.8
D.4
E.10