正弦电路中电容元件的伏安关系用向量式表达应为（ ）
未知类型：{'options': ['[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_75300337-feac-4a85-a1c9-a977673df3e8.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_341bb674-06ca-465c-affa-b16ae2444ce5.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_89644040-90b4-41ea-ab55-0456b28a4530.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_d1f01d57-346e-48c3-90f0-b554c5179476.png"]'], 'type': 102}
未知类型：{'options': ['[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_75300337-feac-4a85-a1c9-a977673df3e8.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_341bb674-06ca-465c-affa-b16ae2444ce5.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_89644040-90b4-41ea-ab55-0456b28a4530.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_d1f01d57-346e-48c3-90f0-b554c5179476.png"]'], 'type': 102}
举一反三
- 在正弦电路中电感元件的伏安关系正确的表达式有( ). 未知类型：{'options': ['[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_c6a347e9-fd90-4581-a901-f9de2334a286.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_f3da8588-c064-470f-b4f4-a3764cf71c54.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_7875a3b4-9354-4b98-820b-367df2fa299a.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_7453857f-ce3b-4fb2-b72a-11ae2f7b6ce1.png"]'], 'type': 102}
- 设[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_067016aa-77f2-4aff-bd36-e3fa5f1bd893.png"],[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_358ab06c-7f19-4ae6-ba82-424c72bd4d18.png"],则[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_2b561af0-b65d-4e5e-936b-72b15b4f0f56.png"][img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_92284d1b-6fe3-4dc1-a732-618796cd01a4.png"] A: 6 B: 10 C: 8 D: 4
- 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}
- 以下对相关系数与回归系数的描述正确的是 未知类型：{'options': ['[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_a239429a-7fee-4b87-8988-34ecbff62f78.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_8e840276-5eb5-496e-99e5-dbf0fc08a23b.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_44c8e13f-08e0-425a-b275-0409b8954e16.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_b013f5a5-447f-46ad-89ec-f4a2c5927468.png"]'], 'type': 102}
- A是n阶实方阵，则A是正交矩阵的充要条件时（ ） 未知类型：{'options': ['[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_160765c0-82ae-41e7-92cc-7f9f38df73cf.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_f91bd7e2-e47b-421c-a1f4-c37277340526.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_0156ee63-63f2-4377-90e7-ee87b08fc01b.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_bb7bc755-5c94-491e-9545-af103b5d2bf3.png"]'], 'type': 102}