A．用电器消耗的电能
B．电路中电流的强弱
C．用电器消耗电能的时间
D．用电器两端的电压
答案：A
— What do you think of the concert?
— , it's not bad, though several songs are out-of-date. [ ]
A. All in all
B. In the meanwhile
C. On average
D. Above all
下列选项中，属于CRT显示器性能指标的有（）
A.频响范围
B.点距
C.屏幕尺寸
D.屏幕分辨率
