这道题都几难下,那位能难解呢?4 Z/ e! Y6 _5 \9 M' }! E. X
1. a 值为何?2 k3 p' _$ V6 Y' J
a. 49.8293 b.49.8329 c. 49.8392: j% i" Y7 s0 K/ t
2. b 值为何? ; y" z% S' A6 e! x3 Y; @ a. 16.6667 b. 16.6676 c. 16.6766 7 p. h6 N" ?2 U+ [! G) P, x3. c 值为何? - r9 V1 z0 d" E- D# t8 o a. 38.4696 b. 38.6494 c. 38.9446) ~ \/ Y* ]. \5 @+ F
4. 蓝剖面线区域之面积为何?$ h; G) K1 I/ r
a. 1067.3350 b. 1067.3305 c. 1067.3503' _4 X- Q8 e4 c; p