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快看,快看,这是什么 意思呀?

快看,快看,这是什么 意思呀?

Calculate the exact area of the figure bounded by the curve y=sinx ,its tangent at the point (pai,0) and the y-axis.


快看,快看,这题是什么意思呀? 还有谁能告诉我90km/h=?m/s呀?


快看!

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以下是引用dorny在2004-2-27 12:27:00的发言:
还有谁能告诉我90km/h=?m/s呀? 快看! [em01][em03][em04][em06][em07][em09][em11][em13]
90千米每小时=多少米每秒
逃之妖妖!高兴啊

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90km/h= 35m/s
When I can reach the sun, moon & stars, I still promise the earth. Only him can provide me the air, water and love...

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