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问题 多项选择题

招标工程标底具有( )等作用。

A．使招标单位预先明确自己在拟建工程上应承担的财务义务

B．给上级主管部门提供核实建设规模的依据

C．评标的重要尺度

D．进行工程结算的重要依据

E．工程决算的参考依据

答案

参考答案：A,B,C

单项选择题

A total of 4.6 million digital televisions have been sold, and the sales of HDTV sets have quadrupled since last year. Consumers have bought HDTVs to play their DVDs and to have clearer pictures and wide screens. Only a small percentage of the people who have purchased HDTVs, however, have actually ^hooked their TVs up# to receive high-definition television digital signals. Perhaps television viewers are having trouble keeping up with the changes in technology. Even the manufacturers of HDTVs, like Mitsubishi, Thomson Multimedia, Sony, and Samsung seem to have a tough time learning how to make their sets work with the various digital TV formats because little standardization has been required or implemented in the industry.Some of the HDTVs weigh over 200 lbs., and a variety of retailers offer a delivery service to the buyer’’s home to help install the heavy sets. This is known as a white-glove service and usually comes with an extra fee. After HDTV purchasers get their sets home and hook them up, they will still need to work to get the digital signals to their systems. Most of the industry’’s cable providers do not yet offer high-definition programing, and only about 15% of commercial television stations have switched over to even the lowest improved digital pictures. Worse yet, viewers may need to install antenna before they can even get the digital signals to their new HDTV sets. Another frustration for home-theater seekers is that the current HDTV sets allow owners only to watch high-definition programs, not to record them.

On the whole, this passage is positioned to dwell on________.

A．the overall picture of the HDTV sector

B．how the giant TV makers should offer better products

C．a lament over consumers’ inability to use a high-end TV set

D．a criticism of the TV makers for doing nothing about a big problem
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单项选择题

个案工作具有很强的专业性，其实施主体只能是( )。

A．志愿者

B．自由职业者

C．社会公益活动家

D．受过专业训练的社会工作者
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