A . 0.1g
B . 0.25g
C . 0.5g
D . 1.0g
[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]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]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,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,要配制l70%乙醇,需加入灭菌蒸馏水约A .132mlB .179mlC .185mlD .279m1E .285ml
[单选题]常规HE染色中还原剂的配制方法是A.蒸馏水99ml加1ml浓氨水B.蒸馏水95ml加5ml浓氨水C.无水乙醇99ml加1ml浓氨水D.95%乙醇99ml加1ml浓氨水E.95%乙醇95ml加5ml浓氨水
[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]按照GB/T6536方法进行蒸馏试验,测得回收量85.0mL、90.0mL时的温度(修正后)分别为181.5、201.0℃,从试验数据计算的损失百分数为4.7%。问:在90%蒸发百分数时的温度计的读数为()。A .182.7B .185.2C .199.0D .188.5