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【简答题】
A set of data consists of 38 observations. How many classes would you recommend for the frequency distribution?( ) 注:答案写数字,如9,10
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反馈参考答案：
举一反三
【单选题】根据国际噪音协会的建议,ICU噪音控制不正确的是
A.
白天控制在45分贝
B.
傍晚控制在40分贝
C.
夜晚控制在20分贝
D.
白天控制在60分贝
E.
墙壁和天花板尽量采用高吸音的建筑材料
【简答题】从中华人民共和国成立到( )基本完成,是我国从新民主主义到( )的过渡时期。
【判断题】Lion tamer Sergei Ivanov was seriously injured by his lion, Sheba, during last night's performance of the Moscow circus. Ivanov has worked in the circus for over 25 years. He was taken to Springfields...
A.
正确
B.
错误
【简答题】完形填空。 Tony is four years old. His (1) name is Brown. (2) father and mother (3) doctors .They are very busy and Tony is (4) home alone . Tony likes drawing very much. He often draws dogs, cocks, foxes ...
【简答题】Cloze 2 The American Dream used to go something like this: arrive in this country for an unskilled job with small pay. Save and (l)______ until you can open a small business--in (2)________ years, a t...
【单选题】根据国际噪音协会的建议,对于ICU噪音控制要求,下列哪项不正确
A.
白天控制在45分贝
B.
傍晚控制在40分贝
C.
夜晚控制在20分贝
D.
白天控制在60分贝
E.
墙壁和天花板尽量采用高吸音的建筑材料
【简答题】A good way to ________ (扩大) your vocabulary is to read a daily newspaper. 2. Smoking during pregnancy ________ (危及) the baby’s life. 3. I was ________ (着迷) by the way she smiled. 4. A few dedicated do...
【简答题】Passage 2 Directions: Listen to a short passage three times. When the passage is read for the first time, listen for its general idea. When the passage is read for the second time, fill in the blanks ...
【简答题】有一个球形的橡皮膜气球，电荷q均匀地分布在表面上，在此气球被吹大的过程中，被气球表面掠过的点（该点与球中心距离为r），其电场强度的大小将由（）变为（）。
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