【单选题】用同一电导池测定浓度为0.01和0.10的同一电解质溶液的电阻,前者是后者的10倍,则两种浓度溶液的摩尔电导率之比为:
【简答题】腾讯能够迅速发展的要诀是专注于人与()的连接。
【单选题】用同一电导池测定浓度为 和 的同一电解质溶液的电阻,前者是后者的10倍,则两种浓度溶液的摩尔电导率之比为( )。
【单选题】Why did people usually read aloud before the nineteenth century?
A.
Few people could read for themselves, so those literate people read aloud to them.
B.
Reading aloud was a mark of one's literacy.
C.
Silent reading was not prevailing at that time.
D.
People read aloud for entertainment.