题目内容
一个IPv4分组到达一个结点时，其头部信息(以十六进制表示)如下：0x45 00 00 54 00 03 58 50 20 06 FF F0 7C 4E 03 02 B4 0E OF 02试问： 用点分十进制表示，分组的源地址和目的地址各是什么
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尿量＞2000ml/24h称为
Directions: For this part, you are required to write a composition of 120 to 180 words. You should base your composition on the title and outline given below. Self-Drive Tourism (1)现在越来越多的人喜欢“自驾游”； (2)“自驾游”增加的原因； (3)“自驾游”时应该注意的问题。
下面关于P2P模型的描述，______存在错误。
In order to work here the foreigner needs a work permit, which must be applied 1 by his prospective employer. The problem here is that the Department of the Employment has the right to 2 or refuse these permits, and there is little that can be 3 about it. It would be extremely unwise 4 a foreign visitor to work without a permit, since anyone doing so is 5 to immediate deportation. There are some 6 to this rule, most notably people from the Common Market countries, who are 7 to work without permits, and who are often given 8 residence permits of up to five years. Some 9 people, such as doctors, foreign journalists, 10 and others, can work without permits.The problem with the Act is not just that some of its rules are unfair but 11 it is administered, and the people who administer it.An immigration official has the power to stop a visitor 12 these shores coming into the country. If this happens the visitor has the 13 to appeal 14 the Immigration Appeal Tribunal. While the appeals are being considered, the visitor has no 15 but to wait sometimes for quite a long time.Critics of the law say that immigration officials treat the 16 visitors badly, and appear to accept or 17 them for no 18 reason. Which side of the political 19 you are on, there seems to be an urgent need for a good look at the Act, for it causes frequent argument, and in the eyes of many, real 20 . 16（）
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