自动发货未付款交易关闭时间为几天
参考答案：24小时
If the null hypothesis is innocence, then the statement "It is better that the guilty go free, than the innocent are punished" is an example of preferring a:（）
A. type I error over a type Ⅱ error.
B. two tailed test over a one tailed test.
C. type Ⅱ error over a type I error.
什么是方块电阻？
