对于癫癎症下列哪一条不属于根据病因分类()。
A.症状性癫癎及癫癎综合征
B.癫癎持续状态
C.特发性癫癎及癫癎综合征
D.隐源性癫癎
E.状态关联性癫癎发作
参考答案:B
On April 24, Tsinghua University ______ its 100th anniversary at the People's Great Hall in Beijing. [ ]
A. congratulated
B. celebrated
C. challenged
D. calculated
浮选柱是一种通过结合某些设计特点以提高选矿性能的浮选机,其主要特点有哪些?