兽用药品淘汰的原因是什么?
参考答案:
1.无治疗作用或者疗效不确切;
2.毒副作用大;
3.剂型不恰当;
4.处方配伍不合理。
_____ of the apple ____ bad and he has to throw it away.
A.two third; went
B.an half; went
C.two thirds; go
D.two thirds; goes
一般万吨轮保险缆(兼做拖缆)前后各()。
A.1根
B.2根
C.3根
D.4根