第5题:[多选题]第 448 题, 本小题 1 分 采用点对点9-2的智能站,任意侧相电流数据无效对主变保护产生何种影响(____)(假定主变为两圈变,保护主变保护仅与高低侧合并单元通信)。 A. 闭锁差动保护 B. 闭锁本侧过流保护 C. 闭锁本侧自产零序过流保护 D. 闭锁本侧外接零序保护 参考答案:ABC
第32题: [单项选择]Ph. D. s are most likely to ______. A. have difficulty getting properly employed B. be employed in the fields of commerce or industry C. have to fill out application forms month after month for others D. work in schools or colleges with low pay 参考答案:A 答案解析:参阅第五段第二句。