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}
举一反三
- 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}
- 设三阶方阵A的秩是2，则与A等价的矩阵为（ ） 未知类型：{'options': ['[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_2a68ab7b-9b7e-4607-abde-e255189c845c.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_208fb5a8-85c0-4a53-8cf2-673752bf5034.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_08c0964d-f78b-44eb-ac06-5c18ec1142e0.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_3d5b7bfd-bef2-4920-8749-90e0f59a4770.png"]'], 'type': 102}
- 设A，B为任意两个n阶方阵，则下列一定成立的是 （ ） 未知类型：{'options': ['[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_33399133-78a2-46d1-b0e6-585d3e1a61fa.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_d308b840-8167-4c60-98c2-50ad54a58d80.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_0836c6f0-9141-4013-8ffa-bd3be454df0a.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_46c561a2-1836-4982-9c80-e1bbc2dc9af1.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}
- 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
内容
- 0
设某种气体的分子速率分布函数为f(v),则速率在v1-v2区间内的分子平均速率为 未知类型：{'options': ['[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_4c30e9fe-5d04-4fc8-9957-2805655c8cf0.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_e46a2d3c-c302-4e0e-b7f1-dbda05263391.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_236231d7-a42e-4a27-ad17-4fa25ffa0243.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_aa7899be-ed45-4d9c-a3c7-785ff01d6664.png"]'], 'type': 102}
- 1
钾的光电效应红限波长是550nm，求钾的电子逸出功 未知类型：{'options': ['[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_4b0c6df6-936e-48d6-a6f7-4af90f48b3eb.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_6abcc1e9-f459-4f9d-8cfa-a3d67a1aeb1f.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_5536ce6e-6fcc-40c8-97b0-8fdbbc084c82.png"]', '[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_2e4b3c88-95cf-499d-8b31-ef18d5ecaab4.png"]'], 'type': 102}
- 2
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}
- 3
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}
- 4
[img src="http://edu-image.nosdn.127.net/61AE584E303C1B2E4BAC078E8F1001DF.bmp?imageView&type=jpeg&thumbnail=890x0&quality=100"] 未知类型：{'options': ['[img src="http://edu-image.nosdn.127.net/130A64ABA6A61E687A5F469C34143002.bmp?imageView&type=jpeg&thumbnail=890x0&quality=100"]', '[img src="http://edu-image.nosdn.127.net/20F7AE0D2D61D3B7C77AC42946420A5E.bmp?imageView&type=jpeg&thumbnail=890x0&quality=100"]', '', '[img src="http://edu-image.nosdn.127.net/EA9E8710C7E7C6FB3911A4B2C566E8FF.bmp?imageView&type=jpeg&thumbnail=890x0&quality=100"]'], 'type': 102}