问题
选择题
Words ______ me when I wanted to express my thanks to him for having saved my son from the
burning house. [ ]
A. failed
B. left
C. discouraged
D. disappointed
答案
答案：A
搜题请搜索小程序“爱下问搜题”
Words ______ me when I wanted to express my thanks to him for having saved my son from the
burning house. [ ]
A. failed
B. left
C. discouraged
D. disappointed
答案：A
很多家用电器都有待机功能．如电视机可以遥控关机而不必断开电源．这一功能虽给人们带来了方便，但电器在待机状态下的能耗也十分严重．下表是某家庭的有关统计数据．问：
| 家用电器 | 待机功率（kW） | 每天待机时间（h） |
| 彩色电视 | 0.0096 | 20 |
| VCD | 0.0129 | 20 |
| 音响功放 | 0.0317 | 20 |
（2）该家庭若能及时断开用电器电源，每月可以节约电费多少元（设电价为0.55元/度，每月按30天计算，电费取整数）？