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问题 多项选择题

下行链路波束形成方法有（）

A.下行链路波束方向图与上行链路波束方向图完全一致

B.识辨期望用户一个或多个路径来形成一个或多个波束，以增强用户接收到的信号

C.利用用户的反馈来辅助下行波束形成

D.其他

答案

参考答案：A, B, C

多项选择题

商标的作用表现在（）。

A.商标是商品的标记，是商品生产者或经营者为了把自己的商品与他人的同类商品区别开来，在商品上使用的一种特殊标记

B.商标表明商品的来源，说明该商品或劳务来自何企业

C.商标能把两个企业提供的商品或劳务与其他企业的同一类商品或劳务相区别

D.商标标志一定的商品质量

E.商标反映向市场提供某种商品的特定企业的声誉
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单项选择题

For each blank, choose the best answer from the four choices and write down on the answer sheet.
Web browser is simply a terminal emulator, designed to display text on a screen. The two essential differences between an ordinary terminal emulator and a Web browser are that the browser knows how to deal with (71) , and that it has a mechanism for (72) graphical files. Display text, display graphics, and (73) hyperlinks—there’s 99 percent of the (74) value. That’s not to say that the manufacturers didn’t go all-out to attach a hyperactive efflorescence of useless capabilities onto their browsers. Remember when media channels in the browser were a big deal, instead of the clutter you can’t wait to delete from your favorites of bookmarks menu Remember when client-side Java applets were supposed to become the preferred (75) for application development Remember frames and all their nasty side effects

A. superlinksB. links C. hyperlinks D. connections
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