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问题 选择题

如图是两电阻的伏安特性曲线，图线1表示的导体电阻为R1，图线2表示的导体的电阻为R2，则R1与R2大小之比是                 (       )

A．1∶3

B．3∶1

C．1∶2

D． 2∶1

答案

答案：A

由图像知，。得，A对。

单项选择题

氯霉素的不良反应中，哪种与抑制蛋白的合成有关

A．二重感染

B．皮疹等变态反应

C．消化道反应

D．灰婴综合征

E．不可逆性再生障碍性贫血
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单项选择题

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．direct

B．navigate

C．indicate

D．go-on
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