题目内容
X线深部治疗机油循环电机发热或转速降低可能原因为
2021-12-09
A.电机绕组有断路或短路现象
B.停水或水流量下降
C.X线管衰老
D.高压部件有打火放电现象
E.其他控制，保护电路故障
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