的相位超前的45°电角。https://edu-image.nosdn.127.net/03CCBF374F7B1BF03CF7C3B3A22B8A5A.jpg?imageView&thumbnail=890x0&quality=100https://edu-image.nosdn.127.net/C64C02D59A2E184D388D4BC10DE1A688.jpg?imageView&thumbnail=890x0&quality=100
举一反三
- 下列图片反映的共同主题是 三元里抗英 致远号撞向敌舰 义和团抗击八国联军https://edu-image.nosdn.127.net/1620C0E6AFD094E8FD6C400F85F5E239.jpg?imageView&thumbnail=890x0&quality=100https://edu-image.nosdn.127.net/EBBF68A946C000661CA2858E3E58764F.jpg?imageView&thumbnail=890x0&quality=100https://edu-image.nosdn.127.net/A3B51C26F0EB32A59576D7DD911A89BE.jpg?imageView&thumbnail=890x0&quality=100https://edu-image.nosdn.127.net/859A7A29F23FAF8E0BD0DA37CC361B52.jpg?imageView&thumbnail=890x0&quality=100
- 一个炔烃，分子式为，被氧化后，生成一种羧酸和，则这个化合物是。https://edu-image.nosdn.127.net/F1B5FF66EF3BF1B1B96AA9C6D0B8DA40.png?imageView&thumbnail=890x0&quality=100https://edu-image.nosdn.127.net/89A46112728ECF9C17813F3421EB752B.png?imageView&thumbnail=890x0&quality=100https://edu-image.nosdn.127.net/3CE7014CC41E9C98C9E669EB4E8AA352.png?imageView&thumbnail=890x0&quality=100
- 中国大学MOOC: 在上述生成https://edu-image.nosdn.127.net/5BB093A91DB4F39A9028F1A7F0BB1109.png?imageView&thumbnail=890x0&quality=100的所有置换的问题中，在搜索树的结点https://edu-image.nosdn.127.net/96D39D5A00286295D7494FEDEB848882.png?imageView&thumbnail=890x0&quality=100处，https://edu-image.nosdn.127.net/1F95EC365E24DFB1277C991DEECA2877.png?imageView&thumbnail=890x0&quality=100的取值范围https://edu-image.nosdn.127.net/34C6A401146D9611BAB32A8D597DE8AC.png?imageView&thumbnail=890x0&quality=100（ ）。
- https://edu-image.nosdn.127.net/3546E7B0BEA83D2C725A5F2CD80A1EF6.jpg?imageView&thumbnail=890x0&quality=100
- https://edu-image.nosdn.127.net/D95D1C88FD17B997E079BB1B4C1D427A.png?imageView&thumbnail=890x0&quality=100