A transport layer protocol has several responsibilities, One is to create a process-to-process (program-to-program) communication; TCP uses port (11) to accomplish this. Another responsibility of a transport layer protocol is to create a (12) and error-control mechanism at the transport level．TCP uses a sliding (13) protocol to achieve flow control．It uses the acknowledgment packet，time-out，and retransmission to achieve (14) control．The transport layer is also responsible for providing a connection mechanism for the application program．The application program sends (15) 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．connection

C．diagrams

D．resources

某股份有限公司召开股东大会表决与另一公司合并事项。根据我国公司法，此项决议必须经该股份有限公司出席会议的股东所持表决权的（）通过。

A．三分之一以上

B．二分之一以上

C．三份之二以上

D．全体