对烤瓷合金的要求不正确的是()
A.铸造性能好
B.收缩变形小
C.弹性模量小
D.润湿性好
E.不易变形和磨损
参考答案:C
Two thirds of the buildings here ______ .
A.need to repair
B.need repairing
C.needs to repair
D.needs repairing
变压器在遭受近区突发短路后应如何处理?