[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]用95%的乙醇配制75%的乙醇500ml,下面配制正确的是()。A .量取95%乙醇395ml,用水稀释至500ml B .量取95%乙醇395ml,加入水105ml,混匀 C .量称95%乙醇375ml,用水稀释500ml D .量取95%乙醇375ml,加入125ml水混匀
[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
[单选题]0.02mol/LHCl溶液500mL,配制成0.01mol/L溶液加入()mL蒸馏水。A . 50B . 200C . 500D . 300
[单选题]现有95%乙醇500mL,要配置70%乙醇,需加入灭菌蒸馏水的量是( )。A.132mLB.179mLC.185mLD.279mLE.385mL
[单选题]现有95%乙醇500ml,要配置70%乙醇,需加入灭菌蒸馏水的量是( )A.132mlB.179mlC.185mlD.279mlE.385ml