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问题 单项选择题

资产阶级价值观与无产阶级价值观之间常常出现对抗性的冲突这种冲突体现在新闻报道行为中往往具有浓厚的（）

A.宗教色彩

B.政治色彩

C. * * 自由

D.言论自由

答案

参考答案：B

判断题

科学家们发现，所有生物体都是由细胞构成的。
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单项选择题

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．procedure

B．function

C．route

D．flow
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