利用可变轮廓铣加工如图所示零件，刀轴参数设为（ ）。A: 朝向点
B: 远离点
C: 远离直线
D: 朝向直线
举一反三
- 17d60db50dd2af5.png利用可变轮廓铣加工如图所示零件，刀轴参数设为（ ）。 A: 朝向点 B: 远离点 C: 远离直线 D: 朝向直线
- 在力法方程的系数和自由项中（ ）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/3a7ac606e16647f4b6a3d2d11beb76bc.png" />恒大于零 B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/11f1ba644a064f5fb28da6ae46cc0df2.png" />恒大于零 C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/a6b6c6466e6646bf8d42d75ebc28748f.png" /><img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/9e771c22268e4410a0f86c6d4ba84df5.png" />恒大于零 D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/4e79f0d189ab4ff69dd07e05ffbf4efc.png" />恒大于零
- 下列结论正确的是( ) A: 如果函数f(x)在点x=<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/fdcb3c002c53441fa69fd9fc3076a5be.png" />处不可导，则f(x)在点x=<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/fccedfd766654505ba6969e49597bb90.png" />处也可能连续 B: 如果函数f(x)在点x=<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/450601f103e541c59a2bcaf43473c913.png" />处可导，则f(x)在点x=<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/ac603e6c25944a939bc20a352e35e40b.png" />处连续 C: 如果函数f(x)在点x=<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/59143c94d1554ce7b1c4188c63dd7dc8.png" />处连续，则f(x)在点x=<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/10cd24ef2c2b47b08193284458b6c8cd.png" />处可导 D: 如果函数f(x)在点x=<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/e1b59bf3878c483f817cd90a0b46acea.png" />处不连续，则f(x)在点x=<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/a1d323d5a3e14eff887de62c708c931f.png" />处不可导
- <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/d2131f26059e42daa04e03a35037283f.png" />如图，已知重物的重量为500N。试确定每根绳索所承受的力。答案是（ ） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/d45dfbb2d71f4195bd952756c8150a94.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/5cb9017e0e14444aaf61888f7bb34369.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/4c1199534060441983e2384898433ef7.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/ab21403229814a07aac9152b298a6b90.png" />
- 阿糖胞苷的化学结构为（ ）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/588c9b478695464b9617893b2e1c303a.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/86b60f7b512f43a29c8431f882722d1b.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/4546ccb30ea64350a626b0cd337e2c98.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/8f610edce6dd4a2e81ca814690e0b5ec.png" />