Each machine supporting TCP has a TCP transport entity, either a library procedure, a user process, or part of the kernel. In all case, it manages TCP streams and （） to the IP layer.A TCP （） accepts user data streams from local process, breaks them into pieces not exceeding 64KB, and sends each piece as a separate IP （） . When datagrams containing TCP data arrive at a machine, they are given to the TCP entity,which reconstructs the original byte streams. The IP layer gives no guarantee that datagrams will be delivered properly, so it is up to TCP to time out and （） them as need be. Datagrams do arrive may well do so in the wrong order, it is also up to TCP to （） them into messages in the proper sequence.
and sends each piece as a separate IP（）
Each machine supporting TCP has a TCP transport entity, either a library procedure, a user process, or part of the kernel. In all case, it manages TCP streams and（）to the IP layer. A TCP（）accepts user data streams from local process, breaks them into pieces not exceeding 64KB, and sends each piece as a separate IP（）. When datagrams containing TCP data arrive at a machine, they are given to the TCP entity, which reconstructs the original byte streams.
The IP layer gives no guarantee that datagrams will be delivered properly, so it is up to TCP to time out and（）them as need be. Datagmms do arrive may well do so in the wrong order, it is also up to TCP to（）them into messages in the proper sequence.
| Each nation has its own peculiar
character which distinguishes it from others. But the peoples of the world have
more points in common than points in which they differ. One type of person that
is common in every country is the one who always tries to do as little as
possible and to get as much as possible in return. His opposite, the man who is
in the habit of doing more than is strictly necessary and who is ready to accept
what is offered in return, is rare everywhere. Both these types are usually unconscious of their character. The man who avoids effort is always talking about his "rights": he appears to think that society owes him a pleasant, easy life. The man who is always doing more than his share talks of "duties": he feels that the individual is in debts to society, and not society to individual. As a result, neither of these men thin A. each nation is peculiar enough to enable us to distinguish it from others B. the peoples of the world are as like as they are different C. the peoples of the world have more similarities than differences D. those who do more than is strictly necessary are common in every country [单项选择]
Each nation has its own peculiar character which distinguishes it from others. But the peoples of the world have more points in common than points in which they differ. One type of person that is common in every country is the one who always tries to do as little as possible and to get as much as possible in return. His opposite, the man who is in the habit of doing more than is strictly necessary and who is ready to accept what is offered in return, is rare everywhere. 我来回答: 提交
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