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【单选题】
当发生核事故时，公众为了躲避危险 ，第一时间撤离危险区域，其中并未涉及到外照射防护中的（ ）原则A.
时间
B.
距离
C.
屏蔽
D.
以上都不是
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反馈参考答案：
举一反三
【简答题】思考:如果在通电螺线管中插入铁芯,铁芯会被 ,也会产生磁场,于是通电螺线管周围既有 产生的磁场,又有 产生的磁场,因而磁场大大增强了。
【单选题】Task 3 (51-55) Directions: This taskis the same as Task1.The 5 questions or unfinished statements are numbered 51through 55. Do you know howto deal with money troubles for the future/ here is some use...
A.
you will not hurry to buy things you wish to have
B.
you may not go shopping for things you don’t need
C.
you will only go shopping for things you may need
D.
you may not hurry to buy things not exactly needed
【单选题】With the antenna of the SART l.5 meters above the sea level, and on the search height of 3000 ft, the detection range of SAR airplane will up to
A.
5 n nules
B.
10 nmiles
C.
40 n miles
D.
2 nmiles
【简答题】《汉书·艺文志》说:“左史记言,右史记事,事为《春秋》,言为《 》。”
【简答题】《汉书·艺文志》说：“左史记言，右史记事，事为《 》，言为《尚书》。”
【简答题】《汉书·艺文志》说：“„„左史记言，右史记事；事为（），言为（）。”它们被称为我国记言、叙事文之祖。
【单选题】Which of the following is known as the roof of the world with a height of more than 5,000 feet above the sea level?
A.
Loess Plateau
B.
Inner Mongolia Plateau
C.
Qingzang Plateau
D.
Yungui Plateau
【简答题】Qinghai Lake, which is the largest inland body of salt water in China, lies 3198 meters above the sea level.
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