设a,b,c是三个互不相同的正数,如果a-c/b=c/a+b=b/a,那么()A.3b=2cB.3a=2bC.2b=cD.2a=b
设a,b,c是三个互不相同的正数,如果(a-c)/b=c/(a+b)=b/a,那么()A.3b=2cB.3a=2bC.2b=cD.2a=b