油浸式站用变出厂验收时绕组绝缘电阻测量测得35kV吸收比(R60/R15)哪些符合要求()。
A.1.5
B.1.3
C.1.2
D.1.1
参考答案:A, B
—Have you ever seen two leaves that are exactly the same?
—Never. Leaves differ ____ each other ____ size and shape.
A.from; in
B.in; in
C.in; from
D.from; from
200D-43*3中的“3”是()
A.级数
B.转速
C.扬程
D.管径