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【单选题】
All the World Asks On my first day in a college classroom, I felt like an overgrown child returning to civilization (文明世界) after having been lost in the forest for thirty years. There I sat, 1 enough to be a father to most of the students in the room, 2 unconfident enough to be their baby brother. We were crowded elbow (肘部) to elbow, listening to a 3 who looked even younger than the students. I felt uncomfortable and out of place as the professor carefully 4 what she expected us to learn. As I listened, I couldn't help but 5 of my own oldest daughter who was now beginning her first year in 6 , just like me. I remembered how hard I had tried to help build self-confidence in her and my other children. So why did I suddenly feel like a scared 7 myself? When I walked out of that classroom, I had serious 8 about my ability to make it 9 college. Not until late that night did my thinking 10 . It was a long-distance 11 from my daughter, my fellow college freshman (新生), that did the trick. She spoke on the phone about the doubts, worries and anxieties she was 12 . She was certain that she’d never 13 at college. How 14 her worries sounded. In my most confident parental 15 , I said, “Doing your best is all the world 16 .” The next day in class, those words still repeated in my head. When the professor raised a 17 for the class, nobody, including me, 18 to answer. When I looked around at the 19 and uncertainty on the young faces in that room, I knew 20 what I had to do: my best. That’s all the world asks. So I raised my hand, and the professor called my name. I spoke. 第6_______空
A.
school
B.
office
C.
classroom
D.
college
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举一反三
【多选题】下列不属于偶然误差的特性的是:
A.
在相同观测条件下的有限次观测中,偶然误差的绝对值可能会超过一定的限值
B.
绝对值较小的误差出现的频率小,绝对值较大的误差出现的频率大
C.
绝对值相等的正、负误差具有大致相等的出现频率
D.
当观测次数无限增大时,偶然误差的理论平均值趋近于零,即偶然误差具有抵偿性
【单选题】设有关系R(A,B,C.,与SQL语句:SELECT DISTINCT A FROM R WHERE B=17等价的关系代数表达式是()。
A.
ΠA(R)
B.
σB=17(R)
C.
ΠA(σB=17(R))
D.
σB=17(ΠA(R))
【多选题】下列属于偶然误差特性的是()。
A.
有界性
B.
对称性
C.
抵偿性
D.
密集性
E.
累积性
【单选题】下列不属于偶然误差的特性的是()。
A.
在一定的观测条件下,偶数误差的绝对值不会超过一定的界限
B.
绝对值大的误差比绝对值小的误差出现的可能性小
C.
绝对值相等的正误差与负误差出现的可能性相等
D.
偶然误差的算术平均值,随着观测次数的无限增加而无限增大
【多选题】MS10-018漏洞是下列( )版本的IE浏览器存在的漏洞
A.
客户机上的IE6
B.
客户机上的IE7
C.
客户机上的IE8
D.
客户机上的IE10
【多选题】下列属于偶然误差特性的是()
A.
有限性
B.
集中性
C.
对称性
D.
抵消性
【单选题】下列不属于偶然误差的特点的是
A.
随机性
B.
互偿性
C.
可减小
D.
可测性
【单选题】生产车间墙壁要用浅色、不吸水、不渗水、无毒材料覆涂,并有用白瓷砖或其他防腐蚀材料装修的高度不低于( )的墙裙。
A.
1m
B.
1.5m
C.
2m
D.
2.5m
【多选题】下列属于偶然误差特性的是
A.
界限性
B.
聚中性
C.
对称性
D.
抵偿性
【多选题】下列不属于偶然误差的特性的是:
A.
在相同观测条件下的有限次观测中,偶然误差的绝对值可能会超过一定的限值
B.
绝对值较小的误差出现的频率小,绝对值较大的误差出现的频率
C.
绝对值相等的正、负误差具有大致相等的出现频率
D.
当观测次数无限增大时,偶然误差的理论平均值趋近于零,即偶然误差具有抵偿性
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