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【单选题】
下列CSS属性中可以更改字体的颜色的是( )。
A.
text-color
B.
bgcolor
C.
background-color
D.
color
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【简答题】Make sure you save all your work on screen the computer breaks down. A.in case B. as if C. so that D. even though
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【单选题】A user has discovered that even though they are using the latest version of the anti-virus software,the computer is still being infected by a virus. Which of the following is the BEST solution for thi...
A.
Replace the computer.
B.
Run chkdsk /f.
C.
Update the virus signatures.
D.
Run scandisk.
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【单选题】Even though most universities retain the royalties from faculty members inventions, the faculty members retain the royalties from books and articles they write. Therefore, faculty members should retai...
A.
Royalties from inventions are higher than royalties from educational software programs.
B.
Faculty members are more likely to produce educational software programs than inventions.
C.
Inventions bring more prestige to universities than do books and articles.
D.
In the experience of most universities, educational software programs are more marketable than are books and articles.
E.
In terms of the criteria used to award royalties, educational software programs are more nearly comparable to books and articles than to inventions.
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【单选题】下列关于金属钠的叙述中,说法正确的是
A.
金属钠可以保存在少量水中
B.
钠在空气中燃烧，产物是 Na 2 O
C.
钠是银白色金属，但露置在空气中会变暗
D.
钠投入到 CuSO 4 溶液中会观察到钠表面析出红色的铜
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【简答题】下列关于叙述观察的说法正确的是:
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【多选题】关于前瞻性和回顾性队列研究的叙述,说法正确的是
A.
前瞻性队列研究的观察方向是从“因”到“果”
B.
回顾性队列研究的观察方向是从“果”到“因”
C.
回顾性队列研究的观察方向是从“因”到“果”
D.
回顾性队列研究的观察方向是“因”与“果”同时出现
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【多选题】关于队列研究的叙述，说法正确的是（）。
A.
属于观察法
B.
是从“因”求“果”的研究
C.
在验证病因假设方面比病例对照研究更有说服力
D.
适用于罕见病的研究
E.
属于分析性研究
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【单选题】轴上点发出的光束形为 , (有/无)对称轴。 轴外点发出的光束形为 , (有/无)对称轴。
A.
圆锥面，有，圆柱面，无
B.
圆锥面，无，圆柱面，有
C.
圆柱面，无，圆锥面，有
D.
圆柱面，有，圆锥面，无
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【判断题】Once you connect your computer to the Internet , it is likely to contract a virus even though you haven’t download anything.
A.
正确
B.
错误
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【单选题】There are usually ______ witnesses to the computer crime, even though it may be taking place in a room filled with people.
A.
many
B.
a number of
C.
a lot of
D.
no
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【简答题】Make sure you save all your work on screen the computer breaks down. A.in case B. as if C. so that D. even though
查看完整题目与答案
【单选题】A user has discovered that even though they are using the latest version of the anti-virus software,the computer is still being infected by a virus. Which of the following is the BEST solution for thi...
A.
Replace the computer.
B.
Run chkdsk /f.
C.
Update the virus signatures.
D.
Run scandisk.
查看完整题目与答案
【单选题】Even though most universities retain the royalties from faculty members inventions, the faculty members retain the royalties from books and articles they write. Therefore, faculty members should retai...
A.
Royalties from inventions are higher than royalties from educational software programs.
B.
Faculty members are more likely to produce educational software programs than inventions.
C.
Inventions bring more prestige to universities than do books and articles.
D.
In the experience of most universities, educational software programs are more marketable than are books and articles.
E.
In terms of the criteria used to award royalties, educational software programs are more nearly comparable to books and articles than to inventions.
查看完整题目与答案
【单选题】下列关于金属钠的叙述中,说法正确的是
A.
金属钠可以保存在少量水中
B.
钠在空气中燃烧，产物是 Na 2 O
C.
钠是银白色金属，但露置在空气中会变暗
D.
钠投入到 CuSO 4 溶液中会观察到钠表面析出红色的铜
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【简答题】下列关于叙述观察的说法正确的是:
查看完整题目与答案
【多选题】关于前瞻性和回顾性队列研究的叙述,说法正确的是
A.
前瞻性队列研究的观察方向是从“因”到“果”
B.
回顾性队列研究的观察方向是从“果”到“因”
C.
回顾性队列研究的观察方向是从“因”到“果”
D.
回顾性队列研究的观察方向是“因”与“果”同时出现
查看完整题目与答案
【多选题】关于队列研究的叙述，说法正确的是（）。
A.
属于观察法
B.
是从“因”求“果”的研究
C.
在验证病因假设方面比病例对照研究更有说服力
D.
适用于罕见病的研究
E.
属于分析性研究
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【单选题】轴上点发出的光束形为 , (有/无)对称轴。 轴外点发出的光束形为 , (有/无)对称轴。
A.
圆锥面，有，圆柱面，无
B.
圆锥面，无，圆柱面，有
C.
圆柱面，无，圆锥面，有
D.
圆柱面，有，圆锥面，无
查看完整题目与答案
【判断题】Once you connect your computer to the Internet , it is likely to contract a virus even though you haven’t download anything.
A.
正确
B.
错误
查看完整题目与答案
【单选题】There are usually ______ witnesses to the computer crime, even though it may be taking place in a room filled with people.
A.
many
B.
a number of
C.
a lot of
D.
no
查看完整题目与答案