为了寻找马航MH370残骸,我国“雪龙号”科考船于2014年3月26日从港口O出发,沿北偏东α角的射线OZ方向航行,而在港口北偏东β角的方向上有一个给科考船补给物资的小岛A,OA=300 13 海里,且tanα= 1 3 ,cosβ= 2 13 .现指挥部需要紧急征调位于港口O正东m海里的B处的补给船,速往小岛A装上补给物资供给科考...
Say hello to the Information Generation, a grouping of people defined not by age, income or location, but by its ability to create, access, share and use data anytime, anywhere. As a result of already pervasive systems which augment the lives of the Information Generation every step of the...