高压硅整流器的油温超过()就跳闸。
参考答案:85度
思维最基本的智力操作手段是______。
A.比较和分类B.分析和综合 C.抽象与概括 D.具体化和系统化
–I phoned you at 5:00 yesterday afternoon, but nobody answered me.
-Sorry. I ______ the flowers in the garden at that time.
A.am watering
B.was watering
C.water
D.will water