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_________。

题1-1-2 如下不是集成电路产业特性的是：     。A．技术密集 B．资本密集 C．高风险 D．低风险

单项选择题题1-1-2 如下不是集成电路产业特性的是：     。