' ?; {# \; ~8 t( e9 S# H( t求:. K0 K+ A! C' {. C3 U: F B
1. a 弧之长度为何? 4 C3 |6 g6 u5 P5 m" \ a. 253.7163 b. 253.7361 c. 253.7613 ' H2 G7 X; j4 @
2. b 弧之长度为何?" b% k5 L) h& ~' ^5 H
a. 192.4116 b. 192. 4161 c. 192.4611 ; Z: u% n2 s# c/ Y& T& W3. c 弧之长度为何?/ z5 g% h4 U% j* f/ K4 B
a. 131.9475 b. 131.9547 c. 131.9745: e8 o; ~* D# t+ \0 {! q7 d
4. ∠ABC 之角度值为何? 4 o+ l' }! @% c& h5 R3 h a. 41.0325° b. 41.2305° c. 41.3205° % o9 v# N8 b' u) U6 r5. 剖面线区域之面积为何? % ~2 L& P0 J Z$ ~5 G a. 7483.7193 b. 7483.7319 c. 7483.79316 d. }) m4 _- @ n
3 p0 o) j) W5 H
[ 本帖最后由 shaonx 于 2007-8-12 20:29 编辑 ]