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发表于 2007-1-4 21:43
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求:1 d& r: }( q) j
1. a 之长度为何?9 b2 \0 u D1 Y
a. 9.6477 b. 9.6747 c. 9.6774
f" A+ w" K7 r2 {2 s" A" N2. b 之长度为何?
. S' M: G- t t4 P% ]5 i0 R" Z a. 14.5116 b, 14.5161 c. 14.5611
/ K0 X. }$ _3 n4 v( B: D& J3. A弧之弧长为何?& F$ b2 N _/ U k6 d
a. 27.0034 b. 27.0304 c. 27.0403' B# x& P4 ]$ `& x& A1 ~& v( R) Z
4. B弧之弧长为何?
, g7 I0 R1 b2 Q# C8 e a. 19.8049 b. 19.8409 c. 19.8940
- z: _ r8 P6 g- x5. C弧之半径值为何?
* X$ O2 x2 i; ]6 o8 Z4 p: r a. 21.8176 b. 21.8671 c. 21.8716
4 |- z4 ^. t2 C7 O& K1 R7 f) E6. 剖面线区域之面积为何?5 C/ g- k- l! O$ N0 |5 Q
a. 145.0234 b. 145.0342 c. 145.0432 |
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