【单选题】Why did the supermarkets provide carts for their customers?
A.
Because they wanted their customers to buy more.
B.
Because no one would help the customers to carry their goods.
C.
Because babies cried a lot without the carts.
【单选题】673,余额试算平衡法可以用公式表示为()。
【单选题】673 余额试算平衡法可以用公式表示为()。
【单选题】下面关于数据挖掘类型的描述,正确的是()。