【简答题】已知抛物线的顶点在原点,它的准线过双曲线 的一个焦点,并与双曲线的实轴垂直,已知抛物线与双曲线的交点为 . (1)求抛物线的方程; (2)求双曲线的方程.
【简答题】抛物线的顶点在原点,它的准线过双曲线 的一个焦点,且与双曲线实轴垂直,已知抛物线与双曲线的交点为 (1)求抛物线的焦点坐标; (2)求双曲线的方程.
【简答题】分支移动(branch migration)
【简答题】生殖洄游(breeding migration)
【简答题】重要思想的本质是:____;地位是:____。
【简答题】RB 公司是一家皮鞋制造企业,拥有近400名员工。针对公司生产线频频出现质量事故,质量检查员疏忽大意、管理部门质量意识淡薄等一系列问题,公司领导决定举办专门的质量管理培训课程来解决这些问题。 质量管理的培训课程被安排在每周五晚上7:00-9:00时进行,为期10周。员工可以自愿听课,公司不给员工支额外的工资。但是公司主管表示,如果员工能积极地参加培训,那么其培训的考核结果将记入个人档案,作为公司以...
【单选题】Human Migration Human migration: the term is vague. What people usually think of is the permanent movement of people from one home to another. More broadly, though, migration means all the ways — from...
A.
Human migration is a vague term which can not be explained simply, but it is seasonal or permanent movement of agricultural workers.
B.
Human migration is the permanent movement of people within a country to another location from one home to another.
C.
Human migration means agricultural workers' seasonal moving within a country or refugees' resettlement from one country to another.
D.
Human migration is big, dangerous, and compelling, and it is the great adventure of human life that has driven humans to conquer the planet, shape the societies.