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【简答题】
边缘应力与薄膜应力不同,________应力是由介质压力直接引起的,而________应力是由连接边缘两部分变形协调所引起的附加应力,使容器直接发生破坏的危险性较大的应力是________应力。
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【单选题】高压断路器的极限通过电流是指 。
A.
断路器在合闸状态下能承载的峰值电流
B.
断路器正常通过的最大电流
C.
在系统发生故障时断路器通过的的最大故障电流
D.
单相接地电流
【简答题】新旧民主革命的根本区别在于革命任务不同。判断对错
【简答题】The young people who talk of the village as being “dead” are talking nothing but nonsense, as in their hearts they must surely know. No, the village is not dead. There is more life in it now than ther...
【单选题】高压断路器的极限通过电流是指 _ 。
A.
断路器在合闸状态下能承载的峰值电流
B.
断路器正常通过的最大电流
C.
在系统发生故障时断路器通过的最大故障电流
D.
单相接地电流
【简答题】A．He was surely under huge pressure. B．The cafe was not one of his greatest achievements. C．He did almost nothing significant. D．He was the greatest leader of the students' union.
【简答题】A．He was surely under huge pressure. B．The café was not one of his greatest achievements. C．He did almost nothing significant. D．He was the greatest leader of the students' union.
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