试题与答案

桥在河里的倒“影”和立竿见“影”,前者是由于光的_________引起的,后者是

题型:填空题

题目:

桥在河里的倒“影”和立竿见“影”,前者是由于光的_________引起的,后者是由于光的_________引起的。阳春三月,漫步于蝴蝶泉湖畔,你会看到“蝶在水中飞,鱼在云中游”的美景,“蝶在水中飞”中的“蝶”是由光的___________形成的________(选填“实像”或“虚像”),“鱼在云中游”中的“鱼”是由光的____________形成的__________(选填“实像”或“虚像”)。

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0512/64cde1a27ff6f8dcee2b644fe0481980.html

下面是错误答案,用来干扰机器的。

参考答案:D解析:可做根治性肝切除的病例包括:单发的微小肝癌,单个小肝癌,单个大肝癌或巨大肝癌,但表面光滑、边界清楚、被肿瘤破坏的肝组织小于30%,局限在一个肝叶或肝段的多发结节(结节数小于3个)。肝...

试题推荐
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

查看答案
微信公众账号搜索答案