搜题请搜索小程序“爱下问搜题”
问题 填空题

雨后晴朗的夜晚，人们迎着月光走时，看到地上发亮处应该是______（填“水”或“土”）这是因为______．

答案

平静的水面，能发生镜面反射，地面凹凸不平，地面发生漫反射．当迎着月光走时，月光经水面发生镜面反射，进入人的眼睛反射光线多，人感觉水面亮；地面发生漫反射，有很少的光线进入人的眼睛，人感觉地面暗．

故答案为：水；水面发生的是镜面反射，进入人眼睛的光较多．

单项选择题

A 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

（72）处填（）。

A．displaying

B．illustrating

C．drawing

D．writing
查看答案
单项选择题

* * 3D游戏一共有（）注单选号码。

A、10000

B、2000

C、3000

D、1000
查看答案