计算大豆完整粒率时应包含哪些因素?
参考答案:包含杂质、损伤粒、破碎粒、未熟粒等因素。
Good to see you again It's almost three years_____ we met last time
A.until
B.before
C.while
D.since
使用细菌生物农药(如BT,绿僵菌等)的注意事项?