In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.
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 () , and that it has a mechanism for () graphical files. Display text, display graphics, and () hyperlinks ——there’s 99 percent of the () 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 () , for application development Remember frames and all their
A. displaying
B. illustrating
C. drawing
D. writing
In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.
Spread spectrum simply means that data is sent in small pieces over a number of the (1) frequencies available for use at any time in the specified range. Devices using (2) spread spectrum(DSSS) communicate by (3) each byte of data into several parts and sending them concurrently on different (4) . DSSS uses a lot of the available (5) , about 22 megahertz(MHz).
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