视频教学，方便快如进入学习

和差备分问题

https://www.bilibili.com/video/BV1VW4y1s74J/?spm_id_from=333.337.search-card.all.click&vd_source=319f006e39baf9a7e55f2f2cae1df1e1

https://www.bilibili.com/video/BV1Zi4y1V7vH/?spm_id_from=333.337.search-card.all.click&vd_source=319f006e39baf9a7e55f2f2cae1df1e1

https://www.bilibili.com/video/BV1Cu4y157Kj/?spm_id_from=333.999.0.0&vd_source=319f006e39baf9a7e55f2f2cae1df1e1

调配问题

https://www.bilibili.com/video/BV12T411z7a8/?spm_id_from=333.337.search-card.all.click&vd_source=319f006e39baf9a7e55f2f2cae1df1e1

配套问题

https://www.bilibili.com/video/BV1ue411Z7G4/?spm_id_from=333.337.search-card.all.click&vd_source=319f006e39baf9a7e55f2f2cae1df1e1

盈利不足问题

https://www.bilibili.com/video/BV1uP4y1d79M/?spm_id_from=333.337.search-card.all.click&vd_source=319f006e39baf9a7e55f2f2cae1df1e1

工程问题

https://www.bilibili.com/video/BV1Dz4y1c7bj/?spm_id_from=333.337.search-card.all.click&vd_source=319f006e39baf9a7e55f2f2cae1df1e1

https://www.bilibili.com/video/BV1iP411u7v9/?spm_id_from=333.337.search-card.all.click&vd_source=319f006e39baf9a7e55f2f2cae1df1e1

https://www.bilibili.com/video/BV1iP411u7v9/?spm_id_from=333.337.search-card.all.click&vd_source=319f006e39baf9a7e55f2f2cae1df1e1

https://www.bilibili.com/video/BV1og411H71Z/?spm_id_from=333.337.search-card.all.click&vd_source=319f006e39baf9a7e55f2f2cae1df1e1

https://www.bilibili.com/video/BV1fK411y7bj/?spm_id_from=333.337.search-card.all.click&vd_source=319f006e39baf9a7e55f2f2cae1df1e1

比例问题

https://www.bilibili.com/video/BV1Q84y1R7Am/?spm_id_from=333.337.search-card.all.click&vd_source=319f006e39baf9a7e55f2f2cae1df1e1

年龄问题

https://www.bilibili.com/video/BV1834y1X7J7/?spm_id_from=333.337.search-card.all.click&vd_source=319f006e39baf9a7e55f2f2cae1df1e1

https://www.bilibili.com/video/BV1Pe411N7Qk/?spm_id_from=333.337.search-card.all.click&vd_source=319f006e39baf9a7e55f2f2cae1df1e1

https://www.bilibili.com/video/BV1B34y117aD/?spm_id_from=333.337.search-card.all.click&vd_source=319f006e39baf9a7e55f2f2cae1df1e1

数字问题

https://www.bilibili.com/video/BV1594y1n7V4/?spm_id_from=333.999.0.0&vd_source=319f006e39baf9a7e55f2f2cae1df1e1

经济问题

https://www.bilibili.com/video/BV1Be4y1V7B3/?spm_id_from=333.337.search-card.all.click&vd_source=319f006e39baf9a7e55f2f2cae1df1e1

销售问题

https://www.bilibili.com/video/BV1L34y1F7Sz/?spm_id_from=333.999.0.0&vd_source=319f006e39baf9a7e55f2f2cae1df1e1

计费与方案选择问题

https://www.bilibili.com/video/BV1x3411f7G2/?spm_id_from=333.337.search-card.all.click&vd_source=319f006e39baf9a7e55f2f2cae1df1e1

https://www.bilibili.com/video/BV1kT4y1N7YJ/?spm_id_from=333.337.search-card.all.click&vd_source=319f006e39baf9a7e55f2f2cae1df1e1

https://www.bilibili.com/video/BV1Q84y1R7Am/?spm_id_from=333.880.my_history.page.click&vd_source=319f006e39baf9a7e55f2f2cae1df1e1