怎么排除接收机内音频D/A转换器或视频编码器电路故障。
参考答案:故障排除:重新连接视音频电缆,调大音量或重新设置声道选择,如是电路故障应送正规维修点进行维修。
验算有余数的除法时,用商×除数+余数=被除数______.(判断对错)
---Did you return Helen’s call?
---I didn’t need to _________I’ll see her tomorrow.
A.though
B.unless
C.when
D.because