问题
单项选择题
适用于皮肉浅薄部位的毫针进针方法是（）。
A.指切进针法
B.挟持进针法
C.提捏进针法
D.舒张进针法
E.套管进针法
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
适用于皮肉浅薄部位的毫针进针方法是（）。
A.指切进针法
B.挟持进针法
C.提捏进针法
D.舒张进针法
E.套管进针法
参考答案：C
| 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．ports
B．streams
C．packets
D．cells