问题
单项选择题 A1型题
安宫牛黄丸的作用是（）
A.清热开窍，豁痰解毒
B.清热泻火，开窍安神
C.清心解毒，开窍安神
D.清热开窍，息风止痉
E.以上都不是
答案
参考答案：A
解析：安宫牛黄丸清热开窍，豁痰解毒。
搜题请搜索小程序“爱下问搜题”
安宫牛黄丸的作用是（）
A.清热开窍，豁痰解毒
B.清热泻火，开窍安神
C.清心解毒，开窍安神
D.清热开窍，息风止痉
E.以上都不是
参考答案：A
解析：安宫牛黄丸清热开窍，豁痰解毒。
| A transport layer protocol has several responsibilities. One is to create a process-to-process (program-to-program) communication; TCP uses port (71) to accomplish this. Another responsibility of a transport layer protocol is to create a (72) and error-control mechanism at the transport level. TCP uses a sliding (73) protocol to achieve flow control. It uses the acknowledgment packet, time-out, and retransmission to achieve (74) control. The transport layer is also responsible for providing a connection mechanism for the application program. The application program sends (75) of data to the transport layer. It is the responsibility of the transport layer at the sending station to make a connection with the receiver. |
A．numbers
B．connections
C．diagrams
D．resources