若|m|=m+1,则(4m+1)2011=( )
﹣1
—Mary has invited me to her birthday party this evening, Mom.
— ________[ ]
A. Best wishes.
B. Have fun
C. Good luck.
D. Happy birthday.
某三角形联接的纯电容负载接于三相对称电源上,已知各相容抗XC=6,线电流为10A,则三相视在功率()。
A.1800VA
B.600VA
C.600W
D.1800W