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【判断题】
先行组织者是指在教新的学习材料之前，先给学生一种引导性材料，它要比新知识更抽象、概括和综合，并且能清楚地反映认知结构中原有观念与新学习任务的联系。A.
正确
B.
错误
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【简答题】对某铁矿石样品中的含铁量进行测定, 7 次分析测定结果(单位: % )为 79.58 , 79.45 , 79.47 , 79.50 , 79.62 , 79.38 , 79.90 ,求: 测定结果的平均值、平均偏差、标准偏差和置信度为 90% 时平均值的置信区间。 对某铁矿石样品中的含铁量进行测定, 7 次分析测定结果(单位: % )为 79.58 , 79.45 , 79.47 , 79.50...
【单选题】When drawing multilevel data flow chart of top-down,the balance between parent chart and son chart must be taken into account,and to pass judgment for the balance of the charts is regularly maintained...
A.
output data
B.
data dictionary
C.
processing number
D.
input data
【单选题】测定铁矿中铁的含量,4次结果的平均值为56.28%,标准偏差为0.10%。置信度为95%时总体平均值的置信区间(%)是(已知t0.05,3=3.18。)
A.
56.28±0.138
B.
56.28±0.14
C.
56.28±0.159
D.
56.28±0.16
【单选题】Surveys reveal that most adults consider themselves "well informed about the affairs of the nation and the world." Yet a regularly taken Roper poll that asks, "From where do you obtain most of your in...
A.
Most adults obtain most of their information about world affairs from the newspaper.
B.
The author of this passage does not believe that television provides enough information to make people well informed.
C.
The number of people answering the questionnaire has increased.
D.
Sixty percent of the people questioned get all their news from television.
E.
Most adults are well informed about the affairs of the nation and the world.
【简答题】当使用指针指向一个函数时,这个指针就称做________.
【单选题】It has been found that vitamin E______.
A.
should be taken by patients regularly and persistently
B.
can effectively reduce the recurrence of heart disease
C.
has a preventive but not curative effect on heart disease
D.
should be given to patients with heart disease as early as possible
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