A-A+
When should the tuning be adjusted？A．When ther
问题详情
When should the tuning be adjusted？
A．When there is no picture and no sound
B．When there is a picture but no sound
C．When the picture is white
D．When there is noise but no picture
参考答案
正确答案：D
解析：For no picture and noise, WHAT TO DO suggests adjust tuning. Choice (A) is not mentioned. Choice (B) needs the volume turned up or the earphones disconnected. Choice (C) needs the brightness control adjusted.
