一个质点做简谐运动,其位移2与时间t的关系曲线如图6—13所示,在t=4 S时,对质点运动状况,下面几种判断正确的是.

一个质点做简谐运动,其位移2与时间t的关系曲线如图6—13所示,在t=4 S时,对质点运动状况,下面几种判断正确的是. (  ) A.速度为正的最大值,加速度为

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He plays squash to the __________ of all other sports.

He plays squash to the __________ of all other sports.A.eradication B.exclusion

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The school committee hoped that their choice of play would b

The school committee hoped that their choice of play would be __________ with th

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__________ human behavior may be caused by eating substances

__________ human behavior may be caused by eating substances that upset the deli

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Digital recording has made __________ a significantly wider

Digital recording has made __________ a significantly wider dynamic range, in re

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