【单选题】三相异步电动机发生短路故障时,将会产生很大的短路电流,造成线路过热,甚至导线熔化,有可能引起火灾爆炸事故,()就是常用的短路保护装置之一。
【单选题】Which of the following shows the right order of what happened to the writer? a—A stranger climbed to the side of road near his car and asked how he was going. b—The writer finished his work. c—He felt...
【单选题】贯穿于植物体各器官中输导同化产物的细胞是( )。
【单选题】Why did Frenchwomen except intellectual women seldom have friendship which is independent of their family in the past?
A.
Because most of them did not have a job.
B.
Because they only had close friends in their girlhood.
C.
Because they usually focused their lives on their families.
D.
Because they were dependent on their husbands.
【多选题】贯穿于植物体各器官中输导同化产物的细胞是 ( )。
【单选题】Why did he take pictures of one of the two women?
A.
Because he knew one of the two women and wanted to take a picture of her.
B.
Because that was one of the few exciting things in his job.
C.
Because he was well-trained as a secret agent.
D.
Because he was so bored and wanted to entertain himself.
【单选题】She says she'd rather he ______ tomorrow instead of today.
【单选题】下列语言单位中全是重叠式合成词的一组是()。