某平原水库水体面积为4500hm2,水深8.0m。在进行渔业资源调查时,采取的样品数至少应为()。记不得了好像选的是这个
A.6个
B.10个
C.12个
D.24个
参考答案:C
Choose and correct the mistakes. 把错误的选项填在括号内并在横线上改正。
( )1. Danny eat ice cream yesterday.
A B C
( )2. I often talks to Miss Li.
( )3. I cann't see a dog over there.
( )4. This is for your.
( )5. Danny jump on the train.
存有会计信息的磁性介质归档保管时,正本和备份应分别妥善保管。 ( )