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【多选题】
有关通信站电源设备的防雷保护措施说法正确的有()。
A.
电力变压器高、低压侧装一组避雷器,避雷器应尽量靠近变压器装设
B.
通信站内交直流设备及电源自动倒换控制架,用机内有分级防雷措施的产品,即交流屏输入端、自动稳压稳流的控制电路,均应有防雷措施
C.
在市电油机转换屏的输入端、交流配电屏输入端的三根相线及零线应分别对地加避雷器,在整流器输入端、UPS设备输入端、通信用空调输入端均应按上述要求增装避雷器
D.
在直流配电屏输出端浪涌吸收装置
E.
电力变压器低压侧的第一级与第二级避雷器的距离宜大于或等于5m
F.
通信站内所装设避雷器残压要符合要求
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【单选题】成人男性,头部被人用木棍击伤,无昏迷,呕吐,X线检查发现颅盖骨折,凹陷0.3cm,其处理时的措施为
A.
呋塞米
B.
50%葡萄糖注射
C.
甘露醇快速注射
D.
手术复位
E.
可不做特殊处理
【判断题】There is an automatic adjustment of Balance of Payment disequilibrium under the Bretton Woods System.
A.
正确
B.
错误
【简答题】一位教师在教学冀教版一年级下册《遥远的恐龙世界》一课前,请学生回家搜集相关资料。下面是开始上课时的一个片段,阅读并回答问题。 老师:同学们,这节课我们来学习《遥远的恐龙世界》,老师课前让你们收集恐龙的资料。你们收集了吗 生(齐答):收集了。 师:请同学们展示交流搜集到的信息。谁先来。 生(一男生):老师,我收集的是三角龙的资料。 接下来,这个男生手捧着搜集来一张张的资料,读起来。刚读几句...
【单选题】The war was the most peaceful period of my life. The window of my bedroom faced southeast. My mother had curtained it, but that had small effect. I always woke up with the first light and, with all th...
A.
He felt frightened by the war.
B.
He felt cheerful.
C.
He felt puzzled by the dramatic situations around him.
D.
He felt burdened with responsibilities.
【单选题】The war was the most peaceful period of my life. The window of my bedroom faced south-east. I always woke up with the first light and, with all the responsibilities of the previous day melted, felt my...
A.
frightened
B.
cheerful
C.
worded
D.
puzzled
【单选题】Only when ______ in 1918, ______ happily back to work.
A.
the war was over … he went
B.
was the war over … did he go
C.
the war was over … did he go
D.
was the war over … he went
【单选题】Only when _____ in 1945 _____ to his hometown.
A.
was the war over; he returned
B.
the war was over; had he returned
C.
the war was over; he returned
D.
was the war over; had he returned
【单选题】The war was the most peaceful period of my life. The window of my bedroom faced southeast. My mother had curtained it, but that had small effect. I always woke up with the first light and, with all th...
A.
He felt frightened by the war.
B.
He felt cheerful.
C.
He felt puzzled by the dramatic situations around him.
D.
He felt burdened with responsibilities.
【简答题】阅读下面的资料并回答问题: 资料一:一只失去雏鸟的美国红雀,总是给养鱼池边浮到水面张口求食的金鱼喂它捕来的昆虫,就像喂养自己的雏鸟一样,一连喂了好几个星期. 资料二:很多年前,在英格兰有一只大山雀,一次偶然碰巧打开了放在门外的奶瓶盖,偷喝了牛奶,不久那里的其他大山雀也学会了偷喝牛奶. (1)从行为获得的途径来说,美国红雀喂鱼的行为属于______行为.其他大山雀偷喝牛奶的行为属于______行为....
【单选题】Under the Bretton Woods system
A.
there was an explicit set of rules about the conduct of international monetary policies
B.
each country was responsible for maintaining its exchange rate within 1 percent of the adopted par value by buying or selling foreign exchanges as necessary
C.
the U.S. dollar was the only currency that was fully convertible to gold
D.
all of the above
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