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【单选题】
关于软件的描述,错误的是( )。
A.
系统软件是用户与硬件系统的接口
B.
“学籍管理系统”属于系统软件
C.
软件系统由系统软件和应用软件组成
D.
Word、Photoshop、Flash均属于应用软件
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【单选题】在MS中采用分子动力学模拟某物质在溶液体系中的扩散系数,下列说法错误的是
A.
可模拟溶液中的形成了分子尺度溶解的溶质
B.
可模拟溶液中的形成了乳状液的溶质
C.
可模拟溶液中的悬浮的固体小颗粒
D.
可模拟溶液中的气体
E.
可模拟溶液中的电子或电荷
【单选题】What does DC mean in the field of electricity?
A.
Dual Current
B.
Double Current
C.
Direction Current
D.
Direct Current
【单选题】已知,则下列结论不正确的是    ()A.a2 |a+b|
A.
已知 ,则下列结论不正确的是                                       (   ) A.a 2 2
B.
ab 2
C.
D.
|a|+|b|>|a+b|
【单选题】Q2: What does the author think about school field trips?
A.
They enable students from different backgrounds to mix with each other.
B.
They widen the gap between privileged and disadvantaged students.
C.
They give the disadvantaged students a chance to see the world.
D.
They only benefit students with rich relatives and neighbours.
【单选题】What does the LSP Holdtime field in an IS-IS database indicate?()
A.
the LSP age
B.
the LSP refresh interval
C.
the LSP elapsed lifetime
D.
the LSP remaining lifetime
【单选题】若 ,则下列结论不正确的是(   )
A.
B.
C.
【单选题】若 ,则下列结论不正确的是(    )
A.
B.
C.
【单选题】若 ,则下列结论不正确的是
A.
a2
B.
ab
C.
【单选题】若 ,则下列结论不正确的是
A.
B.
C.
【简答题】What does the author think of the debate concerning the relationship between the media and violence? A) More studies should be conducted before conclusions are drawn. B) It should come to an end since...
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