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【单选题】
If we work hard, we can overcome any difficulty, ____ difficulty it is.A.
what
B.
how
C.
however
D.
whatever
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【简答题】根据句意及中文或首字母提示完成下列单词。 1. The poor woman had to a________ her baby because she could not afford to keep it. 2. He suggested p________ the match to the following Saturday because of bad weather. 3. 15:30...
【简答题】手摇式兆欧表测量绝缘电阻时,一般只用“L”和“E”端。测量回路对地电阻时,“( )”端接被测设备导体,“( )”端接地线或金属外壳;测量回路之间的绝缘电阻时,两个回路分别与L、E连接。
【单选题】Professor Liu _____ all his students with his great knowledge of history. A. impressed B. excited C. stirred D. touched
A.
B.
C.
D.
D
【简答题】填入适当的关系代词(that, which, who,whom,whose)或关系副词(when.why,where)完成下列句子。 1. The boys________ are playing football are from Class One. 2. Those ______ want to go to the museum must be at the school gate at 7...
【简答题】要扩展成32KX16的ROM,需要( )片512X8的ROM。
【单选题】51单片机是指( )?
A.
有51个引脚的单片机
B.
1951年发明的单片机
C.
最初售价51元的单片机
D.
对市场上、各厂家所有以Intel 1980推出的80C51系列单片机核心为内核，并兼容其指令系统的单片机的统称
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