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ijͬѧѧϰȼϵֵԼһʵ̽úͺͲ͵ֵСϵʵʱװͼʾ׹ȫͬװãÿ1Ӽ¼˱ˮ¶ȣ±

1ڰװʵʱѧ˳ǣڼͼУȵ̶________λãٵ̶________λãѡAB

2Ϊ֤ʵ۵ĿɿԣʵʱӦװͬмʱˮ________________

3ͨм¼ݣΪúͺͲȼУֵϴ________

4ͬѧʵǰƽձˮ͵ȼϵݼ¼ݣùʽQ=cmtt0ˮյΪͨЩ׼ȷؼúͺͲ͵ֵΪļɿ________ Ϊʲô________

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Сһ÷С糵Բⶨ÷糵һµĹʣͼʾʵװãʵʱλòĵ紵ŷ糵磬ַٲ䣬ıϸµĻֱϸ߸պûΪֹĸ߶hʱtmͿɵó糵Ĺʣ

1۲ʵװͨϸ߶________ Ĺⶨ糵Ĺʣ

2ͼеĻҪIJУƽ________ ________

3糵ĹP= ________ ʽе÷űʾ

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йʵʹõ˵Уȷ

A. ʹõѹʱԲõֱӽڵԴ

B. ʹƽʱӦȡ

C. ʹͲˮʱӦ밼Һײƽ

D. ʹҺ¶ȼƲˮʱ¶ȼƷˮкӦõʾȶ

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ڼ䣬ͬѧμڹѧĻĹͼʾװ塣10sڽ5m֪õΪ100NܵΪ160N˵ȷǣؼĦ

A. ܵΪ20N

B. ĹΪ500J

C. ûĻеЧΪ80%

D. øûС壬װõĻеЧʻ

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һֺһɵĻ150N1mĦأĻеЧΪ60%ѡ

A. Сһ125N B. ùһ150J

C. ܹһ250J D. һ100N

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֪ˮıΪ4.2103J/(kg)1kgˮ¶50CJ Ǿ˾ˮˮΪˮͬˮܴ߽϶ȴЧá

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úֵڸľֵָ

A. úȸľеһЩ

B. úոľ¶ȸһЩ

C. úոľղһЩ

D. ҪʹǷųͬúõ

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ֱ׳һ4NСԭܵĿСΪ1N½ܵĺСΪ________ N________

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Ŀ Դ2018-2019ѧ껦꼶ϲ 11.1Žͬ ͣ

ѩϣɲ󣬳ǰһξͣ£һУǷ˹˹ָǶʲô˹û˵____________

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