已知:a:b=1:12,b:c=13:15,那么a:b:c等于(  )A.12:13:15B.12:16:115C.13:16:110D

日期:2022-04-10 07:13:14 人气:1

已知:a:b=1:12,b:c=13:15,那么a:b:c等于(  )A.12:13:15B.12:16:115C.13:16:110D

∵a:b=1:
    A+
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