Thunder and lightning occur when___. A. water evaporates B. clouds collide and cause electrical discharges C. the wind is strong D. it is sunny 相关知识点: 试题来源: 解析 B。雷电发生是因为云相互碰撞产生电荷放电。选项 A 水蒸发不会产生雷电;选项 C 风强不是雷电产生的原因;选项 D 晴天不会...
Michael RycroftRycroft M.J. Thunder and lightning -- what determines where and when thunderstorms occur? Environmental Res. Lett. 2014, vol. 9, no. 12, pp. 121001.M.J. Rycroft 2014 Thunder and lightning--what determines where and when thunderstorms occur? Environ. Res. Lett. 9 121001...
32 Lightning can occur between a charged cloud and the Earth's surface when the electric field strength in the intervening atmosphere reaches 25kN C 1. The diagram shows the electric field between the base of a cloud and the Earth's surface.base of cloud一---一 一一-一一个个2.0km+++++...
Therefore, you need to check whether hardware failures occur. Run the display poe device command to view PoE function information about the switch. <HUAWEI> display poe device Slot 0: POE <HUAWEI> display poe power Error: No current active POE board. <HUAWEI> display poe power-state Error:...
To ensure that this type of overload response does not occur, the short circuit current withstand capability of the NGLA needs to be higher than the available fault current of the system. This short circuit rating for all arresters is found on the nameplate as well as in the manufacturing ...
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Therefore, you need to check whether hardware failures occur. Run the display poe device command to view PoE function information about the switch. <HUAWEI> display poe device Slot 0: POE <HUAWEI> display poe power Error: No current active POE board. <HUAWEI> display poe power-state Error:...
Therefore, you need to check whether hardware failures occur. Run the display poe device command to view PoE function information about the switch. <HUAWEI> display poe device Slot 0: POE <HUAWEI> display poe power Error: No current active POE board. <HUAWEI> display poe power-state Error:...
Therefore, you need to check whether hardware failures occur. Run the display poe device command to view PoE function information about the switch. <HUAWEI> display poe device Slot 0: POE <HUAWEI> display poe power Error: No current active POE board. <HUAWEI> display poe power-state Error:...
Therefore, you need to check whether hardware failures occur. Run the display poe device command to view PoE function information about the switch. <HUAWEI> display poe device Slot 0: POE <HUAWEI> display poe power Error: No current active POE...