对称三相电压源作星形连接,每相电压有效值均为220V,但其中BY相连反了,如图所示,则电压UAY有效值等于()
A.220V
B.380V
C.127V
D.0
参考答案:A
Our talent show got _____ a great success _____ we became popular stars in our school.
A.so, that
B.such, that
C.so, to
D.such, to
葡萄牙、西班牙的海上霸权是如何丧失的?