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为了减小雷电损失,机房工程可以采取的措施有(17)。A.部署式UPSB.根据雷击在不同区域的电
为了减小雷电损失,机房工程可以采取的措施有(17)。
A.部署式UPS
B.根据雷击在不同区域的电磁脉冲强度划分区域界面,不同的区域界面进行等电位连接
C.用导电的金属材料制成屏蔽机房
D.尽量在地下室建设机房
![](https://lstatic.shangxueba.com/sxbzda/h5/images/tips_org.png)
为了减小雷电损失,机房工程可以采取的措施有(17)。
A.部署式UPS
B.根据雷击在不同区域的电磁脉冲强度划分区域界面,不同的区域界面进行等电位连接
C.用导电的金属材料制成屏蔽机房
D.尽量在地下室建设机房
第1题
A.distraction
B.disturbance
C.tremor
D.vibration
第2题
Lincoln's beliefs used to be ______.
A.unpopular with many people during the period of the Civil War
B.welcomed by people in the South during the period of the Civil War
C.worshipped by American people during the period of the Civil War
D.popular with most American people during the period of the Civil War
第3题
Lincoln's beliefs used to be ___
A.unpopular with many people during the period of the Civil War
B.welcomed by people in the South during the period of the Civil War
C.worshipped by American people during the period of the Civil War
D.popular with most American people during the period of the Civil War
第4题
A.return to
B.pay taxes on
C.run away from
D.rebuild
第5题
During the Second World War Hitler_______ many counties.
A.intruded
B.invaded
C.surrendered
D.challenged
第6题
During World War II, more younger people took up smoking.
A.Y
B.N
C.NG
第7题
Many people thought of the war as a / an_________ one.
A、curious
B、forgetful
C、lonely
D、aggressive
第8题
During the Second World War, many Jews escaped to America.
A.traveled
B.fled
C.flew
D.ran
第9题
Many people lost their jobs during the business______.
A.desperation
B.decrease
C.despair
D.depression
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