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搜题/搜资源
【单选题】【消耗次数:1】
There has been an atmosphere of ( ) around here for a few days now.
①
anticipation
②
greeting
③
knowledgw
④
knowing
参考答案:
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This ATM has been out of service for a few days. It should ____ last week.
①
be fixed
②
have fixed
③
fix
④
have been fixed
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【单选题】
This ATM has been out of service for a few days. It should ____ last week.
①
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This technology has been ?around for a long time, but not until recent years _______ it in marketing.
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businesses employed
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did businesses employ
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Johnnason: __________Cathy: Yes, our family moved in here only a few days ago. Johnnason: Welcome to the neighborhood.
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【单选题】
Now Mike isn’t here. He ________ Mr. Green’s. Perhaps he ________ back in a few minutes.
①
went to ; is coming
②
has gone to ; will come
③
has been to ; will be
④
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He used to in a small village, but now he has been used to in the big city.
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live, living
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live, live
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living, living
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【单选题】
10.Now Mike isn’t here. He _________ Mr. Green’s. Perhaps he _______ back in a few minutes.
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【单选题】
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组合逻辑电路的电路结构中包含门电路和触发器。
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一个两输入端的门电路,当输入为1和0时,输出不是1的门是
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④
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【单选题】
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开关
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放大
③
截止
④
饱和
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正确
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晶体管可以把小电压放大成大电压。
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磁性物质能被外磁场强烈磁化,但磁化作用不会无限地增强,即磁性物质在磁化过程中,当磁场强度H达到一定值后,其磁感应强度B不再随H增加而增加,这是由于磁性物质存在
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