A.536.8ml
B.636.8ml
C.836.8ml
D.736.8ml
E.568.6ml
[单选题]若需要70%的乙醇1000ml,现有95%的乙醇应如何配制A.取263.2ml95%的乙醇,加水稀释至1000mlB.取263.2ml95%的乙醇,加
[单选题]现有95%乙醇1000ml,要配制70%乙醇,需加入灭菌蒸馏水A.310mlB.320mlC.357mlD.370mlE.410ml
[单选题]欲用95%乙醇和蒸馏水配制70%乙醇1000ml,所取95%乙醇体积约为( )。A.500mlB.665mlC.700mlD.737mlE.889m
[单选题]配制7%乙醇1000ml,需要用95%的乙醇多少毫升()A.700.1B.721.2C.736.8D.742.5E.763.2
[单选题]配制75%乙醇溶液500ml,需用多少95%乙醇A.325mlB.355mlC.395mlD.425mlE.455ml
[单选题]现有95%乙醇500ml,要配制70%乙醇,需加入灭菌蒸馏水A.155mlB.165mlC.178mlD.185mlE.195ml
[单选题,A2型题,A1/A2型题] 现有95%乙醇500ml,要配制70%乙醇,需加入灭菌蒸馏水约()。A . 132mlB . 179mlC . 185mlD . 279mlE . 385ml
[单选题]现有95%乙醇500ml,要配制70%乙醇,需加入灭菌蒸馏水约A.132mlB.179mlC.185mlD.279mlE.385ml
[单选题]现有95%乙醇500ml,要配制l70%乙醇,需加入灭菌蒸馏水约A .132mlB .179mlC .185mlD .279m1E .285ml
[单选题]现有95%乙醇500ml,要配制70%乙醇,需加入灭菌蒸馏水的量是A.132mlB.179mlC.185mlD.279mlE.385ml