本帖最后由 muhdi 于 2010-2-10 17:13 编辑 2 m/ m _1 N& A) n
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1. a 之半径值为何? % Z/ w0 h3 }( I' {/ h$ o a. 9.2227 b.9.2272 c.9.2722 1 o0 Z" M" @1 K |1 v $ d. e7 t* s. a6 k) _ \9 P( c2. b 之半径值为何?- d9 y% U0 G" M a. 12.1188 b. 12.1818 c. 12.18810 D0 Y- Q9 z, A# J
3. c 之半径值为何?0 W' W* G4 y+ C a. 17.4599 b. 17.5499 c. 17.9954 _+ N: z6 W3 d4. d 之半径值为何?' _) q9 }3 t+ h% b! w7 U
a.30.9579 b.30.9759 c.30.9957