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【单选题】
关于共析转变的特性，下列说法错误的是（）A.
共析转变是固相转变成固相，而固态下的原子扩散比液态下扩散困难得多，所以发生共析转变需要较大的过
B.
由于共析转变时的过，所以共析产物的组织要比共晶组织细密
C.
因共析转变前后均为固相，各自具有不同类型的，所以共析转变会引起内应力
D.
共析转变会出现枝晶偏析
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反馈参考答案：
举一反三
【简答题】按工作原理低压电器分为( )、 ( )。
【单选题】What did the man think he had given to the woman?
A.
An information card of a restaurant.
B.
His own business card.
C.
Mr. Cooper's business card.
D.
A note of what to do.
【简答题】空压机按工作原理可以分为（）、（）。
【单选题】Why didn't he eat anything?
A.
He had forgotten to bring any food with him.
B.
He was afraid he would fall asleep if he should eat anything.
C.
He was not hungry.
D.
It was difficult to eat while flying a plane.
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