【单选题】利用( )来降低加在定子三相绕组上的电压的启动叫自耦降压启动。
【单选题】What function does the first sentence in the second paragraph serve?
A.
It stresses the effects of expensive costs.
B.
It offers further explanation to expensive costs.
C.
It serves as a transitional sentence.
D.
It serves as a contrast to expensive costs.
【单选题】某中专学校一年级学生有400人,二年级有600人,三年级有500人,从中采取分层抽样的方法抽取一个容量为150人的样本参加调查,则三年级学生应抽取
【单选题】有一条蒸汽管道和两条涂漆管道相向并行,这些管道垂直面排列时由上而下排列顺序是( )。
【单选题】利用( )来降低加在定子三相绕组上的电压的启动叫自耦降压启动
【单选题】利用( )来降低加在定子三相绕组上的电压的启动叫自耦降压启动。
【单选题】What does Stephen Schneider say about a heroin addict and methadone?
A.
Methadone is an effective way to treat a hard heroin addict.
B.
Methadone is not a correct way to treat a heroin addict.
C.
Hospitalization together with methadone can work effectively with a heroin addict.
D.
Methadone and heroin are equally effective in treating a heroin addict.
【单选题】利用( )来降低加在定子三相绕组上的电压的启动叫自耦降压启动。