根据设计文件上标示的驻波比测试点进行测量,要求抽查各根天线及各段馈线。填写驻波比测试

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问题:

根据设计文件上标示的驻波比测试点进行测量,要求抽查各根天线及各段馈线。填写驻波比测试表,核对馈线使用量,以下关于驻波比说法正确的有:()

A.核对各段馈线长度与竣工文件的一致性,要求误差范围在10%以内。

B.从管井主干电缆与分支电缆连接处测至天线端的驻波比,应小于1.5。

C.从放大器输出端测试至末端的驻波比,前端未接任何放大器或有源器件,其驻波比要求小于1.5。

D.对于双波段或多波段器件及天线,其驻波比指标可增大至1.8,但测试频率范围应相应调整。

考点:通信工程师室内覆盖系统室内覆盖系统题库
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对有关人体营养成分的认识错误的是(  )

A.缺铁会引起贫血症

B.补钙可使骨骼更强壮

C.多吃蛋白质就不会出现低血糖

D.蔬菜、水果能提供和补充多种维生素

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HONG KONG-----Hong Kong Disneyland is too crowded,a senior Chinese tourism official said today,hinting that another Disney Park is necessary to accommodate demand from China’s huuge population.

The comments by Shao Qiwei,director of China’s State Administration of Tourism, came a day after Shanghai’s mayor Han Zheng said the city was preparing to build China’s second Disney theme park.

“China has a very large population.We now have 1.3 bullion people. The market is very large.As far as I know,Hong Kong Disneyland is now very crowded.”said Shao,whose comments were broadcast on Hong Kong’s Cable TV.

The Hong Kong theme park,which opened in September,was widely criticized in January when it turned away hundreds of Lunar New Year holiday makers from mainland China because the park was full. Chaos(混乱) erupted when angry crowds tried to force their way into the park.

The embarrassing incident prompted a public apology from Hong Kong Disneyland Managing Director Bill Ernest and a dressing down from Hong Kong’s leader Donald Tsang.Authorities are carefully studying the issue of overcrowding in preparation for the possible building of the Disney park in Shanghai.Shao said.

The official Xinhua News Agency reported Tuesday that no agreement has been reached on the park in Shanghai,quoting senior vice president of Walt Disney Parks and Resorts, Leslie Goodman. Hong Kong Disneyland is a joint venture between The Walt Disney Co. and the local government, which shouldered the bulk of the park’s construction fees.

68.Why is it necessary to build a Disney park in Shanghai?

A.Hong Kong Disneyland can’t meet the need of the large population.

B. Hong Kong Disneyland is too small and very crowded.

C.Hong Kong Disney Park was criticized by tourists.

D. Hong Kong Disneyland is far from the mainland.

69.Hundreds of visitors from mainland China got angry because_____.

A.the services in the park were not as good as expected.

B.they were not allowed to go into the park.

C.the park was too crowded.           D. chaos happened at the entrance to the park.

70.The building of a Disney park in Shanghai_____.

A.has been agreed to by The Walt Disney Co.      B.is financed by The Walt Disney Co.

C.willl be in the charge of the Shanghai government.

D.remains to be discussed with The Walt Disney Co.

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分集接收能有效克服射频信号的()。

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通过铁路道口时,不得超车。

题型:多项选择题

“腹满不减,减不足言”提示()

A.热实腹满

B.寒实腹满

C.虚寒腹满

D.虚热腹满

E.瘀血腹满

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