参考答案:外光电
Questions 11 to 18 are based on the conversation you have just heard.
Who is the woman talking to()
[听力原文] M: If you can make up your mind about the color, I can start on the outside of your hou
第37题:[单选题]CRH1A型动车组拔取互锁钥匙环节中,打开TP(TB)车网侧断路器接地柜,插入蓝色钥匙,将___接地,取出黄色钥匙。
A.牵引变流器
B.主断路器
C.网侧断路器
D.辅助电源
参考答案:C
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