【多选题】三相交流电的电源相电压为220V,下列说法正确的是( )。
A.
电源作Y接,负载作Y接,负载相电压为220V
B.
电源作△接,负载作Y接,负载相电压为127V
C.
电源作△接,负载作Y接,负载相电压为220V
D.
电源作Y接,负载作△接,负载相电压为380V
【判断题】十二经脉中交会于巅的有足太阳膀胱经和足厥阴肝经。
【多选题】三相交流电的相电压为220V,下列说法中正确的是()
A.
电源作Y接,负载作Y接,每相负载的电压为220V
B.
电源作Y接,负载作Δ,每相负载的电压为380V
C.
电源作Δ接,负载作Y接,每相负载的电压为127伏
D.
电源作Δ,负载作Δ接,每相负载的电压为220伏
【多选题】三相交流电的电源相电压为220V,下列说法中正确的是( )。
A.
电源作Y接,负载作Y接,负载相电压为220V
B.
电源作Y接,负载作Δ接,负载的端电压为380V
C.
电源作Δ接,负载作Y接,负载相电压为127伏
【单选题】广义的说,文学评论是指对各种 ( ) 进行分析、探讨、研究和评价的议论性文章 。
【单选题】听力原文: Bush was born on July 6, 1946, in New Haven, Connecticut, the first child of the family. His grandfather, Prescott Bush, was a Wall Street financier who was elected to the Senate of the United S...
A.
He was a Wall Street financier.
C.
He did petroleum business.
D.
He began his career in the oil industry.
【多选题】三相交流电的电源相电压为220V,下说法正确的是(-----)。
B.
电源作△接,负载做Y接,负载相电压为127V
C.
电源做△接,负载做Y接,负载相电压为220V
【判断题】十二经脉中交会于巅的有足太阳膀胱经和足厥阴肝经。
【简答题】Fill in the blanks with the words or phrases given below. Change the form where necessary. m ake sense , thrust upon , be attracted to , be allergic to, Feel obliged to, get los t, 5 . Since we ha...
【多选题】三相交流电的电源相电压为220V,下说法正确的是( )。
A.
电源作Y接,负载作Y接,负载相电压为220V
B.
电源作△接,负载作Y接,负载相电压为127V
C.
电源作△按,负载作Y接,负载相电压为220V
D.
电源作Y接,负载作△接,负载相电压为380V