综合布线系统水平线缆线槽规格应按照截面利用率进行核算。根据工程经验100~200根网

题型:单项选择题

问题:

综合布线系统水平线缆线槽规格应按照截面利用率进行核算。根据工程经验100~200根网线宜采用()线槽。

A.300mm×100mm

B.250mm×100mm

C.200mm×150mm

D.200mm×100mm

考点:电气工程师(供配电)建筑智能化建筑智能化题库
题型: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.

"Hook up" as in "hooked their TVs up" underlined in Paragraph 1. most probably means to______.

A.have a hood over the TV

B.be connected to

C.relate oneself to

D.keep contact with

题型:单项选择题

TKZW-1型轴报器能自动巡测()轴头的温度。

题型:单项选择题

统计调查的方法有哪些?

题型:单项选择题

在以下什么情况下贷款人不能行使不安抗辩权( )

A.贷款人有证据证明对方经营状况恶化
B.贷款人有证据证明对方转移资金、抽逃资金以逃避债务
C.贷款人有证据证明对方有丧失或可能丧失履行债务的能力时的其他情形,难以按期归还贷款
D.对方更换总经理

题型:单项选择题

从彼得一世执政开始到19世纪初,俄罗斯社会发生了什么变化?()

A.本土化

B.经济化

C.西方化

D.东方化

更多题库