方程x2-2y2-z2=1表示的图形是()
A.椭球面
B.椭圆抛物面
C.椭圆双曲面
D.单叶双曲面
正确答案是D
扫描二维码免费使用微信小程序搜题/刷题/查看解析。
版权声明:本文由翰林刷题小程序授权发布,如需转载请注明出处。
本文链接:https://doc.20230611.cn/post/428095.html
上一篇:逐级负责制
下一篇:For most people involved in the production and trading of “soft” or agricultural commodities, this is proving to be a grim decade. Prices are in many cases at, or near, historic lows in real terms as markets struggle to cope with floods of surplus pr