线间变压器的额定功率应该等于或大于次级连接的所有扬声器实得()。
A.功率之和
B.功率之差
C.阻抗和
D.阻抗差
参考答案:A
—Your neighbour may you with playing your radio too loudly at night.
—I know. They never say anything that me especially.
A.accuse; appeals to
B.charge; appeal to
C.charge; appeals to
D.blame; appeals to
我国法定计量单位的定义是参照我国的习惯定义的。