• 2022-06-06
    中国大学MOOC: 已知生存函数http://edu-image.nosdn.127.net/_PhotoUploadUtils_61057f4c-6d3c-4ae4-9ded-1bbdd091df14.png,http://edu-image.nosdn.127.net/_PhotoUploadUtils_c6b5568e-5dde-43af-96f2-fe8c3f9a616c.png,则http://edu-image.nosdn.127.net/_PhotoUploadUtils_8eb68cda-8d50-4450-8a9c-b6f8c5a0cb3f.png为( )。