How many types of memory are there _____ our brain?[ ]
A. in
B. at
C. on
D. with
A
申请烟草专卖许可证一般以书面方式提出申请,也可以通过信函、电报、传真、电子数据交换和电子邮件等方式提出申请。
气吸式排种器的吸种盘四周均布的吸种孔孔径()种子尺寸。