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问题 单项选择题

为保证沥青混合料沥青与骨料的黏附性，在选用石料时，应优先选用( )石料。

A．酸性

B．碱性

C．中性

D．无要求

答案

参考答案：B

解析： 碱性石料与沥青的黏附性较好。例如：石灰岩类好于花岗岩类。

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. displayingB. illustrating C. drawingD. writing
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单项选择题

激光打印机大多数使用一种专门的语言描述欲输出的文字和图形的内容及其在输出页面上的布局格式要求。其中______语言是现在的国际标准。 ( )

A．PDL

B．HP GL/2

C．PostScript

D．PCL
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