【填空题】
19、按励磁方式来分,直流电动机有___、___、 ___、___ 四种。
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答案
他励|并励|串励|复励
解析
暂无解析
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【填空题】
30 、在倒闸操作中若发生 疑问 时，不准擅自更改 ___，待向值班调度员或 ___ 报告，弄清楚后再进行操作。31 、在变电站___操作中，不填用操作票的工作的 ___、___、 ___。
【多选题】
动脉造影术后的护理包括___
A. 穿刺点压迫20分钟以上
B. 穿刺肢体制动12小时
C. 注意观察患肢远端的血运情况
D. 术后穿刺点加压包扎，卧床休息
E. 注意观察穿刺点有无出血
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