在水量方面,应满足规划期内城市用水量需求,保证率应达到( )以上。
A.50% B.75%C.90% D.95%
参考答案:C
根据上下文补全对话,将所缺少的内容写在相应的横线上。
Tony: Excuse me.1 ?
Mary: My hobby is reading story books, especially English stories.
Tony:2_____________________________________________?
Mary: Because it can help me develop the reading skills and learn knowledge (知识) as well. What's your hobby, Tony? 3 ?
Tony: No, I think it's hard to read books. I'm interested in playing computer games.
Mary:4 ?
Tony: One hour a day.
Mary: Really? So much time! I think5 .
Tony: Yes, you are right. I decide to do something new and different next school year.
以下哪种不是P2P网络的基本结构
A.集中式拓扑结构
B.分布式非结构化拓扑结构
C.分布式结构化拓扑结构
D.网状结构