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发表于 2009-5-14 19:37:30
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来自: 中国江苏扬州
1. a 弧之长度为何?
, i4 i: @" u& A/ x9 C& D a. 69.4652 b. 69.6452 c. 69.56422 Z3 c. U. ^) Z$ s
2. b 之半径值为何?( I5 b2 g( \2 C1 B; K( g0 G
a. 8.1584 b. 8.5184 c. 8.8154
0 c0 g. m! W' b( _! }; h3. DE 之距离为何?
, O, ]' m. A( J; s0 T6 U a. 52.3349 b. 52.3439 c. 52.4339, g( ~, e" G- {8 x1 A
4. ∠ABC 之角度值为何?2 U! @. l, P" ]. B
a. 87.0561° b. 87.5061° c. 87.6510°
) K; }) `2 Y+ N9 b1 R5. 剖面线区域之面积为何?
8 t U0 Z5 Q% u n- N a. 1321.0485 b. 1321.4085 c. 1321.8405% ?/ O# i' W) x0 C
abcab
8 T# B% N- i2 @ B& B* k8 W
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