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【简答题】
电路如图所示,图中电阻R1~R4均为100kΩ,试回答下列问题。( 集成运放输出电压的最大幅值为± 12V , u I 为 2V 的直流信号。 ) ( 1 ) R 2 短路, 输出电压为 ; ( 2 ) R 4 短路, 输出电压为 ; ( 3 ) R 3 短路, 输出电压为 ; ( 4 ) R 3 断路, 输出电压为 。 (注意:填写答案时,直接写数字+单位,例如:-2V,4V等,不要多写,否则会判错。)
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A.
so on and so forth
B.
more or less
C.
something or other
D.
sooner or later
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【单选题】Why didn' t the government' s expansion program work very well?
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Because the farmers were uncertain whether foreign markets could be found for their produce.
B.
Because the farmers were uncertain about the benefits of expanding production.
C.
Because the farmers were uncertain about the financial support the government guaranteed.
D.
Because the older generation of farmers were strongly against the program.
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【单选题】当上极限尺寸或下极限尺寸为零时,在图样上( )。
A.
必须标出零值
B.
不用标出零值
C.
标出零值与不标出零值均可
D.
视具体情况而定
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Filename
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A(A+B)
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254D
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正确
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【单选题】In the program “You Are The One” last week, everybody had the ______ that she was a good match for the young man.
A.
expectation
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expression
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impression
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【简答题】阅读短文，选择正确答案。 Good morning. The program today is about music. The word 'music' comes from the Greek word 'muse'. The Muses are the goddesses of the arts. Music is only one of the arts. It is like the s...
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【单选题】You can' t help but hear commercials; every few minutes the program is interrupted to give you one advertising______.
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so on and so forth
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【单选题】Why didn' t the government' s expansion program work very well?
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Because the farmers were uncertain whether foreign markets could be found for their produce.
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【简答题】在采用电信号表达数据的系统中,数据有数字数据和( )数据
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【判断题】在采用电信号表达数据的系统中，数据有数字数据和模拟数据两种。
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【简答题】外部设备及对应接口 自学教材P23~P26,完成连线题
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A.
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expression
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