时宜惊醒,不易安卧属于()
A.营血亏虚,心神失养
B.阴虚火旺,内扰心神
C.痰热上扰,心神不安
D.食滞内停,内扰心神
E.痰湿上蒙清窍
参考答案:C
— Where is Danny?
— He is in the library. He is _________ a book.[ ]
A. read
B. reading
C. readding
三相异步电动机的转速取决于磁场()、转差率S和电源频率f。