The system that directs and controls business corporations defines social responsibility.
A、正确
B、错误

A．a-1，6-糖苷键
B．β-1，6-糖苷键
C．a-1，4-糖苷键
D．β-1，4-糖苷键

A.试验检测
B.仪器检测
C.触摸检测
D.分析比较
E.评定认证

A．错误
B．正确