配制75%乙醇溶液500ml,需用多少95%乙醇A.325mlB.355mlC.395mlD.425mlE.455ml
需配制75%消毒乙醇100ml,需取95%乙醇约 A、60mlB、69mlC、70mlD、75mlE、79ml
配制75%乙醇溶液100mi,需96%乙醇A.97mlB.80miC.65mlD.79mlE.60ml
配制75%乙醇溶液100ml,需95%乙醇A.60mlB.75mlC.80mlD.79mlE.85ml
配制75%乙醇溶液100mL,需95%乙醇( )。A.97mLB.80mLC.65mLD.79mLE.60mL
需配制75%消毒乙醇100ml,需取95%乙醇约A.60mlB.79mlC.69mlD.70mlE.75ml
配制75%乙醇溶液100ml,需95%乙醇A.60mlB.75mlC.80mlD.79mlE.85ml
配制75%乙醇溶液100ml,需95%乙醇A:60mlB:75mlC:80mlD:79mlE:85ml
用95%和45%的乙醇配制75%的乙醇溶液500ml,应取95%和45%的乙醇各A.250ml,250mlB.260ml,240mlC.300ml,200mlD.245ml,255mlE.350ml,150ml