选择多少目的过滤器,就是根据流量计的口径大小决定的()
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某职工用标准密度查表59D进行密度换算,则该种油品一定是润滑油。()
The symbolic nature of communication means that the words we speak or the gestures we make have no inherent meaning. ()
As early as 1952, Raymond Williams wrote a book on the definition of culture and he defined culture as “the total way of life of a people”,()