下列实验操作或装置错误的是[ ]
A.
B.
C.
D.
答案:D
If the firms failed to make enough money, they would _____. [ ]
A. close down
B. call off
C. turn down
D. set off
香豆素类药物用量过大引起出血时,应立即停药和缓慢静脉注射大量( )。
A.葡萄糖 B.维生素C C.地塞米松D.维生素K E.氨甲苯酸