14.He arrived____ London ____ a cold winter night.

14.He arrived____ London ____ a cold winter night.( )(本题1.5分)A. at; atB. in; onC

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19. 下列哪个伪指令可用于设置程序在程序存储器中的存放位置 ( )(本题2.0分)A. EQUB.

19. 下列哪个伪指令可用于设置程序在程序存储器中的存放位置 ( )(本题2.0分)A. EQUB. DBC. ENDD. ORG

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20. —Are you hungry now? ( )—_______. I have just

20. —Are you hungry now? ( )—_______. I have just had two bowls of rice.(本题2.0分)

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2. 直流电动机采用降低电源电压的方法起动,其主要目的是 ( )。(本题3.0分)A. 为了使起动过

2. 直流电动机采用降低电源电压的方法起动,其主要目的是 ( )。(本题3.0分)A. 为了使起动过程平稳B. 为了减小起动电流C. 为了减小起动转矩D. 为了

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7. The fans were very excited______ David Beckham

7. The fans were very excited______ David Beckham came to the show.( )(本题1.5分)A.

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