电磁场量的法向边界条件为()。
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未知类型:{'options': ['[img src="http://img0.ph.126.net/EsIkaXjnKukiyimHp6dYpQ==/6630400362140980911.png"]', '[img src="http://img1.ph.126.net/Qvas15HCDc_RrWbLruYPRw==/6619063297747523047.png"]', '[img src="http://img0.ph.126.net/DRI9k3pVjDPeDmngiOgT3Q==/6630279415861923459.png"]', '[img src="http://img2.ph.126.net/IiW1SDf3LX-s_IKSk4Vpvg==/6619471216561427789.png"]'], 'type': 102}
举一反三
- [ ]是平面简谐波波函数。 未知类型:{'options': ['[img src="http://img2.ph.126.net/wjV5ynMkHOZWU6tVOJpgWQ==/6631558147884798602.png"]', '[img src="http://img1.ph.126.net/BYK6eRy2m3CFIGn6uOyBvg==/6631603227861540016.png"]', '[img src="http://img2.ph.126.net/YpG0D7ifszUGb3ZVafQx3g==/6631454793791791103.png"]', '[img src="http://img1.ph.126.net/P6Qa6Cllm5RRaIcGlnUM_g==/6631739567303384107.png"]'], 'type': 102}
- 下面哪些课堂活动的设计符合翻转课堂的理念? 未知类型:{'options': ['[img src="http://img2.ph.126.net/fLmm_3KHOpOcG-uiIjTVlw==/6608621235817664981.png"]', '[img src="http://img2.ph.126.net/DzxEvrA1OrTg4VP84lZ73g==/6608593748026970699.png"]', '[img src="http://img1.ph.126.net/_ASXH7-Of0rFaZcdNd23UA==/6608186928725757415.png"]', '[img src="http://img2.ph.126.net/6SlanK-7uuLkFaTzz0JYgg==/6608256197958303878.png"]'], 'type': 102}
- 一弹簧振子作简谐运动,当位移为振幅的一半时,其动能为总能量的 未知类型:{'options': ['[img src="http://img0.ph.126.net/jpAueoBytuZa6k2wwwW9OA==/855683929300814862.jpg"]', '[img src="http://img0.ph.126.net/wUiBfDcpwubnnTfUqXWe8g==/2988138352860486966.jpg"]', '[img src="http://img0.ph.126.net/BmhE5DieqvLPa8Q2yuK6PQ==/2077566803201671014.jpg"]', '[img src="http://img0.ph.126.net/OaayZdr_Aj3S8aprU5kpSA==/6619163353304620563.jpg"]'], 'type': 102}
- 完成反应[img src="http://nos.netease.com/edu-image/cdd304ce2b3441dc957c95dc97f8ebbf.gif"] 未知类型:{'options': ['[img src="http://nos.netease.com/edu-image/cde7e0ce62c347789314cc3c6102269d.gif"]', '[img src="http://nos.netease.com/edu-image/ba72b1e4f37e4f9ba2135b9594a37d66.gif"]', '[img src="http://nos.netease.com/edu-image/91c10f2fa69045eb8ee9e764f7ecb315.gif"]', '[img src="http://nos.netease.com/edu-image/ab1b998771134fa8b3861a4b6ce42a6d.gif"]'], 'type': 102}
- 下列矩阵,哪一个是正交矩阵( ) 未知类型:{'options': ['[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_e3bcbe32-bf4f-4dd7-87eb-435166d4a694.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_2dd5a805-5f17-4578-950f-b0e99cb4ace5.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_fb404ce8-29fb-4a21-9f66-2e1cc1e8e6b2.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_6238ef9e-3ec5-4c01-8429-4fbbb82bc5ff.png"]'], 'type': 102}