农户饲养的种畜禽用于自繁自养也需要办理种畜禽生产经营许可证。
参考答案：错
简述备货型生产与订货型生产的区别。
I've become good friends with some of the students in my school _____ I met in the English
speech contest last year. [ ]
A. who
B. where
C. when
D. which
