【简答题】关于TCP协议描述正确的是()A. 提供面向连接的、全双工的、可靠的传输服务; B. 提供数据包的错误检测、回应确认、流量控制和数据包顺序控制等机制; C. 提供报文拥塞控制; D. 支持报文分组;
【单选题】在总压101.33kPa,温度20℃下,某空气的湿度为0.01kg水/ kg干空气,现维持总压不变,将空气温度升高到50℃,则相对湿度( )。
【单选题】进行平面控制测量主要目的是完成点的坐标的( )。
【单选题】Listen to Conversation Two and answer the questions 22 to 25. Question 22
A.
It was about a little animal.
B.
It took her six years to write.
C.
It was adapted from a fairy tale.
D.
It was about a little girl and her pet.
【简答题】section B: long conversation. Conversation Two 22-25
【单选题】Listen to Conversation Two and answer the questions 22 to 25. Question 22
A.
Good or bad, they are there to stay.
B.
Like it or not, you have to use them.
C.
Believe it or not, they have survived.
D.
Gain or lose, they should be modernised.
【单选题】开创我国改革开放历史新时期的宣言书是()