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ʱ䣺2016-04-22 10:35:11

ý崫Ч봴⡢ڵ㡢ϸڰѿءϢʧʵȶйϵƲ΢ӣܽһЩɵġ
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ֻݸ

Ч=ָ×ָ××10%

磬ָΪ1Ƿ˿Ϊ10ôЧ=1×1×10×10%=1

磬ָΪ2Ƿ˿Ϊ10ôЧ=2×2×10×10%=4

磬ָΪ3Ƿ˿Ϊ10ôЧ=3×3×10×10%=9

磬ָΪ5Ƿ˿Ϊ10ôЧ=5×5×10×10%=25

ע

ʽֻΪ˵ý崫еҪԣûоϸƵ

ΪʲôҪ10%Ϊ΢Ź˺10%ĶѾܲˣ΢ĻӦó0.1%

ָ޷ֻǸĸ

==============================

ִĥ󿳲ĸҪ?

DZоһźϵͼо
 

\

ֻݸ

1S=t×Vʱ(t)Խ(S)Խ࣬ҼΪȹϵ

2V=F×RԽ(F)ٶ(v)Խ RΪ

3F=Tijֹϵ ,ĥʱ(T)Ķٺ͵ķ̶(F)йأΪķ̶м޵ģҲ˵޽ӽijһ㣬ӦΪij˫߹ϵͼ

48=t+TһΪ8Сʱʱ䡣

㣺S=(8-T)FR
 

\

 

ĥʱ(T)Ķٺ͵ķ̶(F)֮Ĺϵͼ

\

һԣ磺

ϰдһƪİȻýȥʱΪһ(8Сʱ)ǻСʱȥдİȻ󻨷6Сʱȥ?ǻ6СʱȥдİȻ󻨷Сʱȥý?ʽЧ?

ǻ2СʱȥױԼȻ󻨷6СʱȥԼ12?ǻ6СʱȥױԼȻ󻨷2СʱȥԼ4?ֳɹ?

˵һ100꣬ǻ20ȥѧϰȻ󻨷80ȥ׬Ǯ?ǻ80ȥѧϰ20ȥ׬Ǯ?ѧϰٺ׬Ǯ֮һְ׬Ǯ?

һϰ8Сʱ20ѧ2СʱΣȻ󻨷6СʱΣÿѧƽÿСʱ10Ȼһ61020=1200;һϰ8Сʱ20ѧ6СʱΣȻ󻨷2СʱΣÿѧƽÿСʱ100Ȼһ202100=4000;ʵ 4СʱʱѾﵽˣٶ౸Сʱֻʮ֣ôְŽѧ?

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