/images/1041385860215607387/1247119148643778600/khoa-pho-vat-ly-giao-xuat-nhat-phieu-phap-than-khoa-pho-vat-ly-day-ra-mot-phieu-phap-than-chuong-642-chuong-642-mot-tay-ngang-nguoc.txt?ex=665eddb7&is=665d8c37&hm=a002678c7d09d6763e066136b416cba30fff94a3ce2dfb5c1a8c24932635cc15&