林可霉素的抗菌作用是由于抑制了细菌的
A．细胞色素氧化酶
B．嘌呤核苷酸代谢
C．二氢叶酸还原酶
D．核蛋白体上的转肽酶
参考答案：D
It _______ law for some people to let the children who are not old enough ____ in the factories for them.
A．goes against; to work
B．goes against; work
C．sets against; to be working
D．sets against; working
阴损及阳与阳损及阴的内在病理有何异同？
