To trade ____ the people of all eoun tries ____ the basis of equality and mutual ben efit is our established policy.
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根据网络的覆盖范围以及网内计算机之间的距离,可以把网络分为局域125网和广域网()
Gen erally we cover in sura nee __ defi nite (明确的 ) in structi ons from our clie nts.()
A. i n abse nee of
B. in the abse nee of
C. in no abse nee of
D. in all abse nee of
选题包括两方面含义:一是确定_______________,二是确定_______________
课题论证是指对所选课题及课题研究的_______________进行评价性研究的过程。重大的课题要进行两次论证,除了_______________外,往往还须_______________