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【单选题】
分级保护设置方式的选择应根据用电负荷和线路具体情况的需要，一般可分为两级或三级保护，当低压电网供电户数大于（）且有重要用户时，宜按照三级保护配置。
A.
50
B.
60
C.
80
D.
100
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参考答案：
举一反三
【单选题】You'll never sell any product that is as important as yourself, so you want to do it right. Selling yourself--in job interviews, in your performance on the job so you can earn a promotion ,and in work...
A.
tell your future employer your unique abilities, have an open attitude, be well prepared and ask questions
B.
purposely show yourself off, have an open attitude, be prepared, ask tough questions
C.
tell your future employer your unique abilities, be careful about your outer appearance, prepare and ask tough questions
D.
sell your features, be prepared, have an open attitude and ask questions
查看完整题目与答案
【多选题】下列关于激素的允许作用，正确的有
A.
糖皮质激素对儿茶酚胺有允许作用
B.
甲状腺激素对儿茶酚胺有允许作用
C.
醛固酮对儿茶酚胺有允许作用
D.
雌激素对缩宫素有允许作用
查看完整题目与答案
【单选题】—If you want to sell your old house, why not put an _____in the newspaper? —That sounds like a good idea. [     ]
A.
e-mail
B.
advertisement
C.
article
D.
advice
查看完整题目与答案
【简答题】A. Because they need more time for restoration. B. Because they are unlikely to be attackers. C. Because they are more active than horses when they are awake.D ) Because they spend less time eating to...
查看完整题目与答案
【单选题】下列关于脊髓小脑的描述不正确的是
A.
与身体姿势平衡功能有关
B.
由绒球小结叶构成
C.
与肌紧张调节有关
D.
与运动计划的形成有关
查看完整题目与答案
【单选题】The farmers were more anxious for rain than the people in the city because they had more at ______.
A.
danger
B.
stake
C.
lose
D.
threat
查看完整题目与答案
【单选题】If you want to make money, buy cheap and sell______.
A.
high
B.
dear
C.
expensive
D.
deep
查看完整题目与答案
【判断题】The Puritans looked even the worst of life in the face with a treme.
A.
正确
B.
错误
查看完整题目与答案
【单选题】关于GC的“允许作用”说法正确的是（）
A.
醛固酮、脱氧皮质醇的作用，需同时存在一定浓度的GC时才能正常发挥，这种作用称为GC的“允许作用”
B.
脱氧异雄酮、雄烯二酮的作用，需同时存在一定浓度的GC时才能正常发挥，这种作用称为GC的“允许作用”
C.
肾上腺素、高血糖素的作用，需同时存在一定浓度的GC时才能正常发挥，这种作用称为GC的“允许作用”
D.
胰岛素、肾上腺素的作用，需同时存在一定浓度的GC时才能正常发挥，这种作用称为GC的“允许作用”
E.
胰岛素、高血糖素的作用，需同时存在一定浓度的GC时才能正常发挥，这种作用称为GC的“允许作用”
查看完整题目与答案
【单选题】下列（）不是风门的作用。
A.
允许车辆通过
B.
允许风流通过
C.
隔断风流
D.
允许人员通过
查看完整题目与答案
相关题目：
【单选题】You'll never sell any product that is as important as yourself, so you want to do it right. Selling yourself--in job interviews, in your performance on the job so you can earn a promotion ,and in work...
A.
tell your future employer your unique abilities, have an open attitude, be well prepared and ask questions
B.
purposely show yourself off, have an open attitude, be prepared, ask tough questions
C.
tell your future employer your unique abilities, be careful about your outer appearance, prepare and ask tough questions
D.
sell your features, be prepared, have an open attitude and ask questions
查看完整题目与答案
【多选题】下列关于激素的允许作用，正确的有
A.
糖皮质激素对儿茶酚胺有允许作用
B.
甲状腺激素对儿茶酚胺有允许作用
C.
醛固酮对儿茶酚胺有允许作用
D.
雌激素对缩宫素有允许作用
查看完整题目与答案
【单选题】—If you want to sell your old house, why not put an _____in the newspaper? —That sounds like a good idea. [     ]
A.
e-mail
B.
advertisement
C.
article
D.
advice
查看完整题目与答案
【简答题】A. Because they need more time for restoration. B. Because they are unlikely to be attackers. C. Because they are more active than horses when they are awake.D ) Because they spend less time eating to...
查看完整题目与答案
【单选题】下列关于脊髓小脑的描述不正确的是
A.
与身体姿势平衡功能有关
B.
由绒球小结叶构成
C.
与肌紧张调节有关
D.
与运动计划的形成有关
查看完整题目与答案
【单选题】The farmers were more anxious for rain than the people in the city because they had more at ______.
A.
danger
B.
stake
C.
lose
D.
threat
查看完整题目与答案
【单选题】If you want to make money, buy cheap and sell______.
A.
high
B.
dear
C.
expensive
D.
deep
查看完整题目与答案
【判断题】The Puritans looked even the worst of life in the face with a treme.
A.
正确
B.
错误
查看完整题目与答案
【单选题】关于GC的“允许作用”说法正确的是（）
A.
醛固酮、脱氧皮质醇的作用，需同时存在一定浓度的GC时才能正常发挥，这种作用称为GC的“允许作用”
B.
脱氧异雄酮、雄烯二酮的作用，需同时存在一定浓度的GC时才能正常发挥，这种作用称为GC的“允许作用”
C.
肾上腺素、高血糖素的作用，需同时存在一定浓度的GC时才能正常发挥，这种作用称为GC的“允许作用”
D.
胰岛素、肾上腺素的作用，需同时存在一定浓度的GC时才能正常发挥，这种作用称为GC的“允许作用”
E.
胰岛素、高血糖素的作用，需同时存在一定浓度的GC时才能正常发挥，这种作用称为GC的“允许作用”
查看完整题目与答案
【单选题】下列（）不是风门的作用。
A.
允许车辆通过
B.
允许风流通过
C.
隔断风流
D.
允许人员通过
查看完整题目与答案
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