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问题 单项选择题

如图所示，物体以初速度V0冲上粗糙的斜面，则物体受到的作用力是：（）

A.重力、弹力、摩擦力、上冲力

B.重力、弹力、摩擦力

C.重力、弹力、摩擦力、支持力

D.重力、压力、上冲力

答案

参考答案：B

单项选择题

开口度是指患者大张口时，上下中切牙切缘之间的距离。正常人的开口度约为

A．2.5～3.7cm

B．3.7～4.5cm

C．4.5～5.7cm

D．3.5～4.7cm

E．3.5～5.5cm
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单项选择题

In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.

A. Web browser’s B. terminal’sC. emulator’s D. network’s

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
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