【单选题】
6502电气集中在12线上串接QJJ第二组接点其作用是___。
A. 防止提前解锁
B. 防止道岔中途转换
C. 防止迂回电流
D. 保证供电
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答案
C
解析
暂无解析
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接车方向的并置调车信号机作阻拦信号，此时ZJ吸起所检查的条件电源是 ___。
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【单选题】
用ZC-8型接地电阻测试仪测量接地电阻值时接线方式为___ 。
A. E端钮接5m导线，P端钮接20m线，C端钮接40m线
B. P端钮接5m导线，C端钮接20m线，E端钮接40m线
C. C端钮接5m导线，E端钮接20m线，P端钮接40m线
D. P端钮接5m导线，E端钮接20m线，C端钮接40m线
【单选题】
ZC-8型接地电阻测试仪测量接地电阻值时导线的另一端接线方式为___。
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B. E、P、C端分别接被电位探棒Eˊ，电流探棒Pˊ和测物接地极Cˊ
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D.
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【单选题】
ZPDJ型非电气化区段多信息移频轨道电路, 在调整状态下,受电端接收盒限入电压应不小于___,轨道电路应可靠工作。
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【单选题】
办理D3往IG的长调车进路时，有关的FKJ、KJ动作顺序应是___。
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【单选题】
___不是并联谐振电路的特征。
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【单选题】
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【单选题】
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choose five___
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【多选题】
Which two options are the primary deployment modeles for mobile device management？___
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