()与()是现代电网发展的基本要求。
A.安全稳定
B.安全智能
C.坚强智能
D.坚强稳定
参考答案:C
Mr Lin asked us questions in English, not in Chinese.
A.answer
B.to answer
C.answering
D.answered
请任意选取两个智力理论加以介绍。