本帖最后由 muhdi 于 2010-2-10 17:13 编辑 ) R8 P/ N9 u. Z' M4 y V
# l$ n6 D+ I. w5 I/ ?1. a 之半径值为何?4 d" \6 O% D! B8 q
a. 9.2227 b.9.2272 c.9.2722 # S3 `4 w& i# f4 ^+ I8 Q, o! L! F 9 T6 v1 p3 A- s( D2. b 之半径值为何? ) y# A: ^0 N( T a. 12.1188 b. 12.1818 c. 12.1881: z" |3 H/ U" W( C3 z' M
3. c 之半径值为何?! h) ^) ]" @; I' i a. 17.4599 b. 17.5499 c. 17.99548 {1 [% ^1 k3 S( K
4. d 之半径值为何? 0 }6 F6 Y7 A. v% q( T6 N5 F8 h a.30.9579 b.30.9759 c.30.9957