如图,完成样板零件外轮廓的精加工和的加工,补充完整程序1)精铣外轮廓,选用T1号刀,铣刀直径φ16mm。N10 T1N20 M6N30 ① S1200N40 ② G00 X-20 Y-20 Z5N50 G01 Z-12 F100 M07N60 ③ G01 X0 Y0 F150 →ON70 G01 Y140 O→DN80 ④ CR=80 D→AN90 G03 X275.19 Y99.77 CR=120 A→BN100 G02 X280 Y0 ⑤ B→CN110 G01 X0 Y0 C→ON120 ⑥ G00 X-20 Y-20N130 G00 Z50 M09N140 M052)钻,先钻排,再钻圆周,选用T2号刀。N150 T2N160 M6N170 M03 S1000 F50N180 G54 G00 X0 Y0 Z50 M07N190 ⑦ N200 ⑧ (48,30,0,0,48,5)N210 X280 Y50N220 ⑨(80,140,65,60,120,3 )N230 ⑩ N240 G00 Z50 M09 M30 A. ① B. ② C. ③ D. ④ E. ⑤ F. ⑥ G. ⑦ H. ⑧ I. ⑨ J. ⑩