1、ScannedbyCamScanner 20 17 20 18 ( 12 5 60 ) 1 u R . A = 3 B = Z ( C t v B) n B ( 2 ! ( ) ( B 3 C , 2 D 24 k 3 A “ 2 0 J F 1 1 3 + 0 B p 3 o E R , Jc o x + 1 4 0 P V x bER , x b z + x o + 120 C f r 3 24 D p p q 4 I = 381 ( ) A 14 B 12 c C i o D 8 5 p P A ( o , n p ( 7 C ( x + 1 ) ! ( x = 25 ( A T + 9
2、 = 1 B T + = 1 c 9 D 9 f 6 b , ! B 6 A d 6 D 6 C d 6ScannedbyCamScanner A = , k a = A 26 B 25 C 24 D 23 9 A , B , C , D 1 C D B 1 B I A , D 1 C “ F A A B B C C D D W 2 S O 10 X , O 1 1 r 0 O , z = a r 1b y ( a O , b 0 ) 10 11 12 13 14 15 16 20 17 ( A 44 80 B 45 80 C 44 8 1 D 45 81 12 j / . 2 p x (p
3、O ) P , t B A B M 1 N , (ScannedbyCamScanner 3 C 2 D A 2 B 2 3 ( 4 5 20 ) 13 M ( x . . ) H x + a y / o d = ( 0 , 1 , 3 ) # + 2 y + 3z + 3 = 0 1 ( 2 , 0 ) 1m a / D . m _ 1 M 1 a 1 L A B PA PB a P , C o s t a + c o s t a n ( 70 ) 17 ( 10 ) n 1 O , p 2 2 8 5 0 , 2 m + )n ( 1 ) p q Jn i ( 2 ) p v q x 18
4、 ( 12 ) & 48 0 B , C a , b , e 2 o o sc ( a c o s + b c o s A ) c ( I ) C i ( 2 ) c = 3 & 4 C 19 ( 12 ) B a r (i l ) ( 1 9 0 ( 2 ) = ScannedbyCamScanner 20 ( 12 ) S . ) a t 1 n 1 S 1 1 4 a . + 2 1 21 ( 12 ) C y 2 . 4 M (m , O ) x M t C d A , B O ( 1) m = 1 1 1 AB ( 2 ) M , 1 . + m M 1 1 M l + I I B M B M 1 1 2 2 ? 22 ( 12 ) ( x + l 2 . 8 ( 1 , 0 ) P N = 2 Q = 0 ( 1 ) 9 C ( i ) O l y + o
