采用国际标准产品标志制度实质上是一个（）
A.第三方认证
B.企业自我认证
C.标准化部门实施认证
D.企业主管部门的认证
参考答案：B
The way he did it was different ________we were used to.[ ]
A．in which
B．in what
C．from what
D．from which
