Which two statements are true for Predictive DRS? (Choose tw_答案

【多选题】

Which two statements are true for Predictive DRS? (Choose two.)___

A. It balances resource utilization for virtual machines with unpredictable utilization patterns.

B. It integrates DRS with vRealize Operations Manager to balance workloads for virtual machines before resource utilization spikes occur.

C. It balances resource utilization based on a threshold's algorithm that runs each night.

D. It determines the best placement and balance of virtual machines based on a threshold's algorithm that runs each night in vCenter Server 6.5 Database.

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【多选题】

低压配电屏(盘)发生火灾的主要原因有或长期不清扫，积灰受潮短路。___

A. 安装不符合要求、绝缘损坏、对地短路

B. 绝缘受潮，发生短路

C. 接触电阻过大

D. 电气设备不符合要求

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【多选题】

选择室内外配线方式时，应综合考虑以及安全要求等因素。___

A. 线路的用途

B. 配线场所的环境条件

C. 铺设线路长度

D. 安装和维修条件

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【多选题】

按照用途常见电杆有等。___

A. 直线杆

B. 耐张杆

C. 跨越杆

D. 转角杆

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【多选题】

找正底盘中心的方法是。___

A. 可将基础坑两侧副桩的圆钉上用线绳连成一线或根据分坑记录数据找出中心点

B. 再用垂球的尖端来确定中心点是否偏移

C. 如有偏差，则可用钢钎拨动底盘，调整至中心点

D. 最后用泥土将盘四周覆盖并操平夯实

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【多选题】

电动机在以及由于起动或自起动条件差可能起动失败或需要限制起动时间的情况下，需装设过载保护。___

A. 容易过载的

B. 功率在30kW以下的

C. 功率在30kW及以上的

D. 长时间运行且无人监视的

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【多选题】

高压断路器根据装设地点选择有。___

A. 户内型

B. 户外型

C. 架空型

D. 落地型

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【多选题】

下列对"全电路欧姆定律"的描述，正确的是。___

A. 在闭合的电路中，电路中的电流与电源的电动势成正比

B. 在闭合的电路中，电路中的电流与负载电阻及电源内阻之和成反比

C. 在闭合的电路中，电路中的电流与电源的电动势成反比

D. 在闭合的电路中，电路中的电流与负载电阻及电源内阻之和成正比

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【多选题】

10kV跌落式熔断器一般由构成。___

A. 绝缘子

B. 上下接触导电系统

C. 熔管

D. 操作绝缘子

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