简易贮藏包括()、()、()。
参考答案:堆藏;沟藏;窖藏
I'm free today. I _____calling on Mr Green, for we haven't seen each other for ten years.
[ ]
A. fancy
B. beg
C. expect
D. attempt
新生仔猪溶血病的典型症状是()
A.腹浑
B.排尿困难
C.神经症状
D.血红蛋白尿
E.畏寒、霞颤