竞争性抑制维生素K,使维生素K依赖因子合成受阻。()
A.肝素
B.香豆素类
C.链激酶
D.尿激酶
E.阿司匹林
参考答案:B
I'd appreciate ________ if you would like to teach me how to use the computer.[ ]
A. that
B. it
C. this
D. you
数字微波由卫星通信系统引起的干扰容限,中级电路差错秒为0.12%。