The author suggests that the approach of physicists to solving scientific problems is which of the following？( ) A.Practical for scientific purposes B.Detrimental to scientific progress C.Unimportant in most situations D.Expedient，but of lttle long-term value
The author suggests that the approach of physicists to solving scientific problems is which of the following？( )
A.Practical for scientific purposes
B.Detrimental to scientific progress
C.Unimportant in most situations
D.Expedient，but of lttle long-term value
B.Detrimental to scientific progress
C.Unimportant in most situations
D.Expedient，but of lttle long-term value
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已知某国国际收支平衡表中，经常项目差额160亿美元，资本和金融项目差额为-100亿美元，误差与遗漏为1o亿美元，则该国储备资产增减额为（ ）。A.70亿元B.-70亿美元C.+60亿美元D.+270亿美元