The city has several railway stations.
（）several railway stations in the city.
A transport layer protocol has several responsibilities. One is to create a process-to-process (program-to-program) communication; TCP uses port （） to accomplish this. Another responsibility of a transport layer protocol is to create a （） and error-control mechanism at the transport level. TCP uses a sliding （） protocol to achieve flow control. It uses the acknowledgment packet, time-out, and retransmission to achieve （） control. The transport layer is also responsible for providing a connection mechanism for the application program. The application program sends （） 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.
TCP uses port （） to accomplish this.| Several years ago during the dot-com
passion, Manhattan lawyer John Kennedy sometimes wore a dark blue suit to meet
potential Internet clients. But he soon realized that his conservative clothes
were a strike against him before he even shook hands. So he began to do business
in casual, open-shirt clothes. But now the tables have turned. Today Silicon Valley executives are the ones often coming out in suits. No wonder that Fortune 500 executives are dusting off their silk ties and pants. "I would say there is a trend now toward a little more business dress," said Kennedy. "I find myself wearing suits more." While there isn’t a rush toward formal office wear, clothiers and executives say the workplace uniform is heading that way. In many offices, men are wearing jackets, ties and pants more frequently than a year ago. Top wom A. the Manhattan law business grew very quickly B. shaking hands with clients became popular C. the country was fighting the conservatives D. the Internet companies boomed then 我来回答: 提交
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