86 ( 6 ) 8 8 65 P P 6 K 1 P P8 6 5 400 1.2.3 P P 6 6 8 6 2 P 6 8 8 P P 68 . 31 O 3 P 1 + 20 30 b W e 45cm 90cm 215cm P 2 V Q b MW A b × b 1 Q 3 P b b V Q W e P Q b V V V Q Q Q b e W 2 400 0 3 4 36 120 100 × 2000 1 × × 1 2 3 4 2 5 A 5 3 1 A A 123 C 5 5 C 0 5 5 B 123 A × 5 5 ( 3 4 A 5 123 5 A 5 6 4 B 5 123 5 A 5 4 C 5 123 A 5 4 A 5 5 5 A 5 B 5 4 B 5 A 5 5 A 5 C 5 4 C 5 B 120 80 60 40 20 4 8 12 16 / 10000 4 10 10 100 × 2500 6000 5 120 0 1 1 2 123 6 1 × 1 6 6 2 5 20 123 5 2 20 1 × 5 1 1 20 × × 500 / 500 5 5 12 5 20 60 1 × 5 )
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