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【简答题】
半径为R的圆轴，抗扭截面刚度为______。 A． B． C． D． 半径为R的圆轴，抗扭截面刚度为______。
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反馈参考答案：
举一反三
【单选题】_____ are sources of internal secondary data.
A.
U.S. census data
B.
Scholarly data
C.
Newspaper websites
D.
Sales invoices
【判断题】《道德经》全书以哲学意义之“道德”为纲宗,论述修身、治国、用兵、养生之道,而多以政治为旨归,乃所谓“内圣外王”之学,文意深奥,包涵广博,被华夏先辈誉为“万经之王”
A.
正确
B.
错误
【简答题】Which of the following are primary sources of data and which are secondary sources of data?
【简答题】将下列句子翻译成中文 Energy sources can be classified in primary energy sources and secondary energy sources to meet the needs of society .
【单选题】Which sources of secondary data would be helpful in defining the problem of Wendy's increasing its share of the fast food market?
A.
a field research project to be conducted by Wendy's to answer the question of how to increase its share of the fast food market
B.
a report from the Fast Food Retailers Association on changing preferences for consumer tastes
C.
a US Census Bureau report on the changing demographic profile of the US consumer
D.
all of the above
E.
B and C only
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