反竞争性抑制剂对酶催化反应的影响为（）。
A、仅影响Km
B、仅影响Vmax
C、同时影响Km和Vmax
D、对Km和Vmax均无影响
参考答案：C
- I do more exercise and eat _________ meat than I did last year.
- That's why you're getting thinner. [ ]
A. little
B. less
C. least
泌乳期奶牛的管理。
