题目

The water tap was leaking (漏水) again, and the noise was driving Cassie crazy.Cassie looked at her watch. It was nearly nine o’clock. She climbed out of bed and stood on a chair by the shelf. Her mother’s Mr. Fix-It Book was on the top shelf. Cassie stepped down quietly. She read the book quickly until she found the page she was looking for, and then began to read carefully.Next, Cassie opened a box in the kitchen and picked out the tools she needed — a hammer, a wrench, and several small things. It was no easy job for her to do the repair, and she tried several times. Finally, the wa 下列有关电能表的说法中，正确的是 [　　] A． 电能表是测量消耗电能多少的工具 B． 电能表能直接显示出每月所需付的电费 C． 家庭电路中，消耗的电能越多，电能表上的转盘转动得越快 D． 为了不烧坏电能表，进户线应先接空气开关再接电能表