某变电所110kV母线压变更换,在投运过程中发现开口三角电压绕组有一相头尾接反,此时开口三角电压为()
A.0V
B.57.7V
C.100V
D.200V
参考答案:D
_____ she is not so healthy _____ she used to be? [ ]
A. Why is it that; what
B. Why it is that; that
C. Why is it that; as
D. Why it is that; who
“造成的节奏主要表现在平仄和语调上”的是()
A.音色
B.音量
C.音高
D.音长
E.音符