Currently 94% of Web users use either Inte

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问题:

Currently 94% of Web users use either Internet Explorer or Firefox, but recently some new (71) have been developed that are beginning to attract attention. The browser Opera is becoming very (72) because of its speed, it is currently the world’s fastest browser, and because it is much smaller (73) existing browsers (it can almost fit on a single diskette). It can also (74) the last Web page you visited, so the next time you surf, you can start where you left off. And like the big two, you can get it for free; the catch is that you have to watch blinking ads in one comer, or pay $40 for the ad-free (75) of Opera.

A.popular

B.notorious

C.wonderful

D.common

考点:计算机软件水平考试初级网络管理员初级网络管理员上午试题
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科学证明,人类是由古猿进化而来的。在这个进化过程中起决定作用的是

A.劳动

B.能直立行走

C.使用火

D.语言

题型:单项选择题

1h平均是指任何1h的平均浓度,每小时至少有( )min的采样时间。

A.35

B.40

C.45

D.50

题型:单项选择题

数据模型可分为概念数据模型和结构数据模型,层次模型是______数据模型。

题型:单项选择题
如图所示,理想变压器原线圈输入交流i=Imsinωt,副线圈按有一电流表和负载电阻R,电流表的示数为0.10A.在t=时(T为交流的周期),原线圈中的电流瞬时值为0.03A.变压器的原、副线圈的匝数比为(  )

A.10:3

B.3:10

C.3:10

D.10:3

题型:单项选择题

目前在猪、鸡配合饲料中通常添加的氨基酸有()、()两种。

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