更换绕组后的变压器其冲击合闸次数为5次。(DL/T572-2010)()
参考答案:错
The price of the flat now is ______ that last year.
A.as twice high as
B.twice more expensive than
C.as high as twice
D.twice the amount of
哈夫曼树是其树的带权路径长度()的二叉树。