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【简答题】
单晶硅太阳电池的基本结构由______、表面主栅线、蓝色氮化硅保护膜、______、扩散层、单晶硅基体、铝背场等组成。
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【单选题】____ the government’s efforts, our life is becoming better and better.
A.
Instead of
B.
Thanks to
C.
Thanks for
D.
In order to
【简答题】The U. S. government has been covering up evidence of extraterrestrial visits for more than 50 years, an array of 20 retired Air Force, Federal Aviation Administration and intelce officers said r...
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A.
A
B.
A
C.
A
D.
A
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A.
reluctantly
B.
unwittingly
C.
impulsively
D.
anxiously
【单选题】Excel2010 中,以下 操作一定不能够改变当前工作簿中显示的工作表数。
A.
从“文件”菜单打开“选项”对话框,在其“常规”选项卡中进行改变
B.
插入或删除工作表
C.
复制或移动工作表
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A.
ask
B.
persuade
C.
assigns
D.
order
【单选题】在纯电阻电路中设i =ImsinωtA。则U=( )V。
A.
Um sinωt
B.
Um sin(ωt +90°)
C.
Um sin(ωt -90°)
D.
Um sin(ωt -180°)
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A.
就绪 → 运 行
B.
运行 → 就绪
C.
就绪 → 阻塞
D.
阻塞 → 就绪
【单选题】It is believed that there’s little chance that mankind would _____ a nuclear war.
A.
stand      
B.
persuade  
C.
transform survive
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