三相交流电动转辙机动作电气特性参数的监测内容是()
A. 动作电流曲线
B. 动作功率曲线
C. 1DQJ状态
D. 定反位表示
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决定电杆长度的主要因素是()。
A. 弧垂
B. 导线对地的安全距离
C. 电杆的埋深
D. 线路档距的大小
Hacks and intrusions affect the economic performance of business immediately, in the short-term, and in the long-term. Which two of these are short-term economic impacts of a security branch? ()
A. loss of retail sales
B. erosion of investor confidence
C. disruption of business operation
D. loss of suppliers or customer