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2020ҵУ԰Ƹƻ𰸽13

2019-07-30 19:13:30| йƸ

61.𰸡AʲͶУɵʲͶߵʲͶʹģ󣬷С

62.𰸡AڼֽijɱģʽУɱͽ׳ɱ޹سɱȱɱͻɱسɱ;ڼֽ ģʽУɱͶȱɱ޹سɱ;׳ɱͻɱسɱԣģʽͳɱģʽֽ漰ֽĻɱ

63.𰸡Bɱ=ֽ/2×ɱʣ׳ɱ=ֽ/ֽ×һν׳ɱȻֽԽСɱԽͣ׳ɱԽߡ

64.𰸡Aݾöģͣö=[(2*7200*50)/2]^(1/2)=600(ǧ)Ѷ=7200/600=12()Ѷ=12/12=1()

65.𰸡Bݾöģͣö=[(2*1000*100)/5]^(1/2)=200(ǧ)Ѷ=1000/200=5()Ѷ=30/5=6()

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