【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。
【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 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()。