判断A、B两点的相对位置（ ）https://nos.netease.com/edu-image/51E596FCC4A03A8408CBABCD8A0BA2D1-1443070742879?imageView&thumbnail=520x520&quality=100
举一反三
- 参照立体图，判断其三面投影是否正确？https://nos.netease.com/edu-image/3B7DC2AE0DDBA074D209EFDC45133E53.png?imageView&thumbnail=520x520&quality=100
- 中国大学MOOC: 假设角 http://nos.netease.com/edu-image/9454BE04B70783537F8315FB45F1D7C6-1443931645905?imageView&thumbnail=520x520&quality=100终边恰好经过点P(3，-4)，则http://nos.netease.com/edu-image/6674A8662F743146C3F820A2CF48BCE9-1443931750374?imageView&thumbnail=520x520&quality=100=
- 下图中重影点的标注是正确的。https://nos.netease.com/edu-image/46FFB7899D2FD098D3A64263F7410847.png?imageView&thumbnail=520x520&quality=100
- 化合物 的正确系统命名为 https://nos.netease.com/edu-image/B305A6BB931E8F835E469815D3A3428A.JPG?imageView&thumbnail=520x520&quality=100
- 化合物 的正确系统命名为 （ ）https://nos.netease.com/edu-image/B305A6BB931E8F835E469815D3A3428A.JPG?imageView&thumbnail=520x520&quality=100