为了克服测量电气设备绝缘吸收比可能对设备绝缘幼劣的误判断,常采用测量其10min与1min的绝缘电阻之比,即用测量极化指数p的方法来判断绝缘优劣。
参考答案:对
The boy was badly hurt in his head, however, still .
A.living
B.alive
C.live
D.dying
It was fortunate that John _____ escaped being killed in a traffic accident. [ ]
A. nearly
B. almost
C. narrowly
D. likely