The origin of the coordinate system inherent to CNC machine tools is ( ). A: Machine origin B: Machine reference point C: Workpiece origin D: Fixture origin

https://p.ananas.chaoxing.com/star3/origin/b31898e8d988e836116efe3cba9a910f.pnghttps://p.ananas.chaoxing.com/star3/origin/fb8dc50d75c1b761d9389a77bc20b4fd.pnghttps://p.ananas.chaoxing.com/star3/origin/7e75cd17522334f54b2eaedb009dba9a.png

,当在连续时,___https://p.ananas.chaoxing.com/star3/origin/2d7d11725699807cb0b07057a0e6aa1b.pnghttps://p.ananas.chaoxing.com/star3/origin/8afd799308433cf0c1bf99426a50b068.pnghttps://p.ananas.chaoxing.com/star3/origin/6fc93eeaca0b4e2eeb3232571be04039.pnghttps://p.ananas.chaoxing.com/star3/origin/9ac20ba1a54c062278a4c0602f36ab4c.png

设是圆,则https://p.ananas.chaoxing.com/star3/origin/d8b5edc9a2457c461a3685877f8606ab.pnghttps://p.ananas.chaoxing.com/star3/origin/5f3c1256fa1597901980dc868dfb57f7.pnghttps://p.ananas.chaoxing.com/star3/origin/1932e2a8e9452d4d6f94177a0ca40384.pnghttps://p.ananas.chaoxing.com/star3/origin/5785decddcc5b175015fc7c46d4d8405.png

使,,,的值为https://p.ananas.chaoxing.com/star3/origin/7a71315286a845cd71d58a43d172d70e.pnghttps://p.ananas.chaoxing.com/star3/origin/82992dfd55feeb0dbc3accfc460e8e6f.pnghttps://p.ananas.chaoxing.com/star3/origin/d072c844f7cfa56460a42ea3424f0622.pnghttps://p.ananas.chaoxing.com/star3/origin/d03cce0f654cef79e0f8e9e14f223092.png

设,,矩阵,则秩 ____。https://p.ananas.chaoxing.com/star3/origin/37ef575fe498777db654afddca62fe2c.pnghttps://p.ananas.chaoxing.com/star3/origin/a615458f7dcae581d0fff21cde15a403.pnghttps://p.ananas.chaoxing.com/star3/origin/290ba9cd94f47cfdfb6c2f491dc6ba09.pnghttps://p.ananas.chaoxing.com/star3/origin/4552fd27a3592e03f9b28737ec534441.png

在 中, , ,则 等于https://p.ananas.chaoxing.com/star3/origin/98366284d8feecd580613938380206ea.pnghttps://p.ananas.chaoxing.com/star3/origin/526e25c58361a406de96a44862df7aba.pnghttps://p.ananas.chaoxing.com/star3/origin/04970d84ab61ade1077625be94ccdd96.pnghttps://p.ananas.chaoxing.com/star3/origin/7a34359614a39bd8fbffa909e85a630f.png

设,其中;,其中则有.https://p.ananas.chaoxing.com/star3/origin/d0cfc2621081de50fdccfce79f46071a.pnghttps://p.ananas.chaoxing.com/star3/origin/a859ca16f27e44ddbe42071534d98115.pnghttps://p.ananas.chaoxing.com/star3/origin/97ec69aa5345de920ba437ef28f0672b.pnghttps://p.ananas.chaoxing.com/star3/origin/5a081a011913b73c53f831c6efc17e9b.png

设函数,而,其中,则为https://p.ananas.chaoxing.com/star3/origin/bdd3c3c3d814f974d45d9be460d5a66a.pnghttps://p.ananas.chaoxing.com/star3/origin/9013fc3411ac505abed248ac00a80d36.pnghttps://p.ananas.chaoxing.com/star3/origin/f675b4422c15e05748ebddd882faa308.pnghttps://p.ananas.chaoxing.com/star3/origin/3895cb15e5f52df4fab9f7a8ad29c794.png

设是闭区域:,,则https://p.ananas.chaoxing.com/star3/origin/67f3b9ce1bda9b4c999134a2f3035a9c.pnghttps://p.ananas.chaoxing.com/star3/origin/3dbbc854a126017299127fa64bccd615.pnghttps://p.ananas.chaoxing.com/star3/origin/bc5ca4972bce897f0cca16630df18fda.pnghttps://p.ananas.chaoxing.com/star3/origin/80014c2d2a19dc5bb425db83989526d0.png