(2015年真题)欲用95%乙醇和蒸馏水配制70%乙醇1000ml,所取95%乙醇体积约为( )。
现有95%乙醇500ml,要配制70%乙醇,需加入灭菌馏水( )。[37%]
现有95%乙醇500ml,要配制70%乙醇,需加入灭菌馏水( )。A.155ml B.165ml C.178ml D.185ml E.195ml
现有95%乙醇500ml,要配制70%乙醇,需加入灭菌馏水( )。[37%]
现有95%乙醇500ml,要配制70%乙醇,需加入灭菌馏水( )。A.155ml B.165ml C.178ml D.185ml E.195ml
现有95%乙醇500ml,要配制70%乙醇,需加入灭菌蒸馏水( )[37%]
现有95%乙醇500ml,要配制70%乙醇,需加入灭菌蒸馏水( )A.155ml B.165ml C.178ml D.185ml E.195ml
现有95%乙醇500ml,要配制70%乙醇,需加入灭菌蒸馏水( )[37%]
现有95%乙醇500ml,要配制70%乙醇,需加入灭菌蒸馏水( )A.155ml B.165ml C.178ml D.185ml E.195ml
若需要70%的乙醇1000ml,现有95%的乙醇应如何配制[37%]
若需要70%的乙醇1000ml,现有95%的乙醇应如何配制
现有95%乙醇500ml,要配制70%乙醇,需加入灭菌蒸馏水约[37%]
现有95%乙醇500ml,要配制70%乙醇,需加入灭菌蒸馏水约A.132ml B.179ml C.185ml D.279ml E.385ml
现有95%乙醇500ml,要配制70%乙醇,需加入灭菌蒸馏水[37%]
现有95%乙醇500ml,要配制70%乙醇,需加入灭菌蒸馏水 A.155ml B.165ml C.178ml D.185ml E.
欲用95%乙醇和蒸馏水配置70%乙醇500ml,所取95%乙醇体积约为()A.368ml B.325ml C...[37%]
欲用95%乙醇和蒸馏水配置70%乙醇500ml,所取95%乙醇体积约为()A.368ml B.325ml C.250ml D.168ml E.500ml
欲用95%乙醇和蒸馏水配置70%乙醇500ml,所取95%乙醇体积约为()A.368ml B.325ml C...[37%]
欲用95%乙醇和蒸馏水配置70%乙醇500ml,所取95%乙醇体积约为()A.368ml B.325ml C.250ml D.168ml E.500ml