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[说明] 在Linux下安装配置DHCP服务，DHCP服务程序/usr/sbirddhcpd需要读取配置文件/ etc/dhcpd．conf，以下是一个DHCP配置文件的主要内容： subnet 200．1 1 7．207. 0 netmask 55，255．255．0 range 200．117．207．10 200．117．207．100； range 200．117，207．110 200．117，207．200； default-lease-time 86400； max-lease-time 604800； optionsubnet-mask 255，255．255．0； optionrouters 200．1 1 7. 207．1； optiondomain-name "myuniversity.edu.cn"； optionbroadcast-address 200．1 1 7．207．255； optiondomain-name-servers 200．1 1 7．207．3； [问题6] Red Flag Linux 4.0提供了DHCP配置工具，在命令行或Shell提示符下应输入什么命令启动该工具
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某公司制定了未来五年的投资计划，相关信息如下：公司的理想资本结构为负债与权益比率为2:3，公司流通在外的普通股有125 000股。 年份 年度内的总投资规模 年度内的总净利润 年份 年度内总投资规模 年度内的总净利润 1 350 000 250 000 4 980 000 650 000 2 475 000 450 000 5 600 000 390 000 3 200 000 600 000 要求： (1) 在公司采用剩余股利政策的情况下： ①若每年采用剩余股利政策，每年发放的每股股利为多少 ②若在规划的5年内总体采用剩余股利政策，每年的每股固定股利为多少 (2) 若公司采用每年每股0.5元加上年终额外股利，额外股利为净收益超过250 000元部分的50%，则每年应发放的股利为多少 (3) 若企业的资金成本率为6%，从股利现值比较看(1)和(2)，哪种政策股利现值小
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Migrant (移民的) WorkersIn the past twenty years, there has been an increasing tendency for workers to move from one country to another. While some countries have restricted most (51) to local people, others have attracted and welcomed migrant workers. This is particularly the case in the Middle East, (52) increased oil incomes have enabled many countries to call in outsiders to improve local facilities. Thus the Middle East has attracted oil-workers (53) the .U.S.A. and Europe. It has brought in workers from many countries, (54) South Korea and Japan.In view of the difficult living and working (55) in the Middle East, it is not surprising that the pay is high to attract suitable workers. Many engineers and technicians can (56) at least twice as much money in the Middle East as they can in their own country, and this is a major (57) .Sometimes a disadvantage has a compensating (补偿) advantage. For example, the (58) living conditions often lead to increased friendship when workers have to (59) on each other for safety and comfort. In a similar way, many migrant workers can save large sums of money partly because of the (60) of entertainment facilities. The work is often complex and full of problems but this merely (61) greater challenge to engineers who prefer to find solutions to problems rather than do routine work in their home country.One major problem which (62) migrant workers in the Middle East is that their jobs are temporary ones. They are nearly always on (63) , so it is not easy for them to plan ahead with great confidence. This is to be (64) since no country welcomes a large number of foreign workers as permanent residents. In any (65) , migrant workers accept this disadvantage, along with others, because of the considerable financial benefits which they receive. 60().
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