1Ｃr18Ni9Ti这种不锈钢管按金属组织分应为铁素体。
参考答案：错
香港、澳门和台湾作为特别行政区，都享有高度自治权，拥有立法权和司法权，可以有自己的军队。()
A．正确
B．错误
It was ______ he does ______ makes his students enthusiastic about school.[ ]
A. that; that
B. what; what
C. that; what
D. what; that
