压缩机在真空状态下不能通电。()
参考答案:对
Having seen the X-ray, the doctor decided to ________ the patient.
A.operate
B.operate on
C.work
D.work on
以下哪一部史书是我国历代王朝编写史书的典范( )
A.《春秋》 B.《汉书》 C.《后汉书》 D.《史记》