用于上行ACK/NACK的反馈的PUCCH格式() A.format 1 B.for

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问题:

用于上行ACK/NACK的反馈的PUCCH格式()

A.format 1

B.format 1a

C.format 1b

D.format 2a

E.format 2b

考点:LTE认证考试LTE认证综合练习LTE认证综合练习题库
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2011年2月文化部、财政部出台意见,要求全国美术馆、公共图书馆、文化馆(站)免费开放,免费提供基本服务。这一做法(  )

A.活跃了我国的文化市场

B.促进了文化产业的发展

C.影响了公益性文化事业的收益

D.有利于保障人民基本文化权益

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BBU3806和RRU3801C的串网复用口的开关均打开的情况下,哪些连接方法是错误的()

A.BBU3806(或RRU3801C.上的串网复用口上连接了二分线,二分线上的网口通过网线连接到HUB,同时调测计算机也与HUB相连

B.BBU3806(或RRU3801C.上的串网复用口上连接了二分线,调测计算机的网线直接和二分线的串口相连接

C.BBU3806(或RRU3801C.上的串网复用口上没有连接二分线,调测计算机直接使用网线和BBU3806(或RRU3801C.的串网复用口连接

D.BBU3806(或RRU3801C.上的串网复用口上连接了二分线,二分线串口上连接的串口线的另一端又出于悬空状态

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以具体的业务需求为导向的采购模式是( )

A.战略支援型采购模式

B.单独业务型采购模式

C.进货型采购模式

D.部门统合型采购模式

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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.

A majority of HDTV consumers could not enjoy high-quality digital pictures because ().

A. they did not tune in to the right channel

B. they did not install the system

C. the market retailers created the confusion on purpose

D. the manufacturers did not have a uniform standard for their sets

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当二氧化碳气体保护焊焊丝直径()mm,为粗丝二氧化碳气体保护焊。

A.小于等于1.2

B.大于1.6

C.大于1.2

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