数据清洗目的在于删除重复信息、纠正存在的错误，并提供数据( )。
A、归一性
B、易读性
C、一致性
D、可用性

煤炭分选的作用是( )A．降硫分 B．降灰分 C．降低煤炭用量 D．节约动力消耗

多项选择题煤炭分选的作用是( )

What does the woman say about the dictionary？ 短对话4.m...

单项选择题What does the woman say about the dictionary？ 短对话4.mp3
A、The hardcover edition is a little more expensive,though on sale.
B、Both editions are on sale.
C、The dictionary once had two editions with the same price.
D、adding value to the community that you are visiting. It may involve some physically challenging activities and extreme sports.

对于邻接表存储的下图，从0开始访问，深度优先遍历，第四个访问的节点为_________。

单项选择题对于邻接表存储的下图，从0开始访问，深度优先遍历，第四个访问的节点为_________。