线路绝缘子上刷硅油或防剂是为了()。
A.增加强度
B.延长使用寿命
C.防止绝缘子闪络
D.防止绝缘子破裂
参考答案:C
Bill likes playing ____ guitar, but he doesn’t like singing ____.
A.a; a lot
B./; at all
C.the; very much
D.the; at all
病人男性,40岁,因骑跨伤致排尿困难, * * 流血入院,诊断首先考虑为
A.前 * * 断裂
B.输尿管损伤
C.肾裂伤
D.膀胱破裂
E.后 * * 断裂