• 2022-06-12
    下列边际技术替代率的计算公式正确的有:
    A: [img=139x44]18034d1a6093262.png[/img]
    B: [img=139x44]18034d1a6093262.png[/img]
    C: [img=164x25]18034d1a7753e8b.png[/img]
    D: [img=183x25]18034d1a854fadb.png[/img]