1。 假如我这东西买来,不能正常使用,比如我房间内收不到信号,等其它导致我不能正常使用的情况,我能拿来调换同类的能正常使用的机器吗,有多久的时间限制
1。
if my this thing buys, cannot normally use, for instance in my room cannot receive the signal, and so on other causes the situation which I cannot normally use, I can bring the machine which exchanges similar can normally use, how long time limit has。