【单选题】下列电路中,不可以实现有源逆变的有( )。 A.三相半波可控整流电路 B.三相桥式半控整流电路 C.单相桥式可控整流电路D.单相全波可控整流电路外接续流二极管
【简答题】简述妊娠期糖尿病,75g OGTT诊断标准
【单选题】After that he didn’t feel hungry _____.
【单选题】He studied in Florida _____, but he didn’t feel _____ at all because he made a lot of new friends. [ ]
【判断题】J曲线效应认为,贬值不会立即引起贸易收支的改善,反而可能导致恶化,只有经过一段时间之后,贸易收支才得以改善。
【单选题】Mr. Andrews didn't feel comfortable ______.
A.
because he didn't go to the doctor.
B.
because he had had some medicine which made him sick.
C.
because he was really ill after eating two sausages.
D.
because the dog was to die.
【简答题】I didn’t feel like___,so he suggested___a taxi.