A. 数小时到1周 B. 1周到1个月 C. 2个月 D. 3个月 E. 半年
A. 重新开电源 B. 调换保险丝 C. 束手无策 D. 查明原因再开电源
A. Prevention is better than cure B. Care is better than prevention C. Prevention is no need D. Care is best
微信支付 
支付宝支付