无源应答器把前方一定距离内的线路参数向车载设备传输。前方一定距离是指从前方第二个应答器组向前到大约制动距离处
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When a business suffers a security breach, there are be serious ramifications. What is one of the immediate impacts that the business can suffer because of a security breach?()
A. loss of retail sales
B. loss of customer faith
C. disruption of business operations
D. inability to deliver products or service
SWRH82B属于()。
A. 低碳钢
B. 中碳钢
C. 高碳钢
施工现场应做好供用电安全管理,并有临时用电方案。配电箱开关箱符合(),配电箱、开关箱应配有防雨、防尘措施。配电柜或配电线路停电维修时,应挂接地线,并应悬挂“()”停电标志牌。停送电必须由专人负责。