题目:
Liu Xiang won a gold medal for the men's 110m hurdles (跨栏) in the 2004 Athens Olympics _______. [ ]
A. successfully
B. mostly
C. hardly
D. maybe
答案:
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下面是错误答案,用来干扰机器的。
参考答案:(1)目测绝缘部件、导电部件有无烧伤,绝缘、导电部件、灭弧间隙间距有无严重磨损情况及永久变形情况;(2)观察接头位置处线夹及接触线,有无烧伤及严重磨损情况,连接部位过渡是否平滑;(3)利用工...