架子床,出现在明代,有四架或者六架,偶尔有八架,它不是单纯的卧具,常常用来待客。
参考答案:错
解析:它是单纯的卧具,不能用以待客。
When I was in the countryside, I ____ by the riverside every day.
A.walked
B.was walking
C.walk
D.have walked
电能表的实用倍率如何计算?