填空题
A--product warranty B--after-sale services
C--certification system D--copyright piracy
E--domestic products F--life of use
G--owner of copyright H--pirated copyright
I--potent legislation J--processing requirements
K--product design L--product coverage
M--product standards N--quality assurance system
O--skill-intensive
( )售后服务 ( )版权所有
【参考答案】
B，G