【单选题】以下对出现PEI的时间描述正确的是:
A.
早发型ICP出现PEI较早(<26年)< /div>
【单选题】关于纯金属结晶的过冷度,下列说法错误的是?
【单选题】设c1. c2均是char类型变量,则以下不正确的函数调用为______。
【单选题】Miss Pei is on time for everything. How ______ it be ______ she was late for the opening ceremony?
【单选题】How did the criterion of “being hidden” in Yan style occur? A It dawned upon Yan Zhenqing accidently. B Yan Zhenqing learnt it from former masters. C Yan Zhenqing got the idea from Zhang Xu.
A.
It dawned upon Yan Zhenqing accidently.
B.
Yan Zhenqing learnt it from former masters.
C.
Yan Zhenqing got the idea from Zhang Xu.
D.
It was passed down from Yan’s ancestors.
【简答题】金属结晶的必要条件是______,理论结晶温度和实际结晶温度的差值称为______。
【单选题】关于金属结晶过程中过冷度的描述,下列说法错误的是( )