如图所示系统,其大径 d 1 = 45mm ,液体在流速为0.5m/s ,小径 d 2 =19mm ,从1-1到2-2断面的阻力损失为15J/kg ,则2-2断面处的流速为() m/s
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【单选题】How can a company improve its sales? One of the keys to more effective selling is for a company to first decide on its 'sales strategy.' In other words, what is the role of the sales person? Is the sa...
A.
the former highlights the benefits while the latter emphasize the function of the product
B.
the former uses more prepared information, the latter has to get ready for unexpected information
C.
the former involves no discussion while the latter involves discussion a lot
D.
the former is effective in creating demand, the latter is effective in satisfying existing demand
【简答题】How can you obtain more complete description of the company?A. By calling the company’s Human Resource Department. B. By visiting the company's web page. C. By going to the company directly. D. Both A...