14、【解】全效率%85 %100 48 .%100 1 21???????L LLy L y Ly L?因为%100 )( )()( 1 3??dG dGd ?所以%100 )(d )(d)(d)( 11 22 11???d y d yd yd c???? 0~5% %100 20 78 48 .020 1???????) (d c? 5~ 10%79 %100 10 14 48 .010 2???????) (d c? 10~ 20% %100 15 .015 3???????) (d c? 20~ 40% %100 20 .020 4???????) (d c?> 40%100 %100 35 048 .035 5???????) (d c? 19、【解】(1) 因为y yyy L y Ly L 1 211 21?????所以m gyyy 3 112/368 .0908 .044???????)( )(%100 )( )( 1 3 1 31 3d f d fd f d fG Gd c c ?????) ( 0~5%10 .68 % )( 1???d c? 5~ 10%72 .81 14 % )( 2???d c? 10~ 20%65 .92 20 % )( 3???d c? 20~ 40%04 .94 % )( 4???d c? 40~ 60%99 .95 14 % )( 5???d c?> 60%100 % )( 5???d c?(2)GGG 231??)(d)( )d- (1)(d 1 12 11 c???????????-1 ])(-1 )[(d)(d c? 0~5%06 .36 % 9-1 %) 1( )(d 12???d c?, 5~ 10%82
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