使用饲料添加剂应该遵守哪些原则?
参考答案:
(1)安全;
(2)有效;
(3)稳定;
(4)适口性好;
(5)对环境无不良影响。
选择shadow或shade并用其适当的形式填空 .
①Sometimes people will get frightened by his own____________ especially at night.
②After a long walk, they needed to find some____________ and have a rest.
十九畏中人参畏( )
A.大戟B.瓜蒌C.细辛D.五灵脂E.丁香