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【单选题】
已知椭圆的长轴长是短轴长的 倍,且经过点 ,则椭圆的标准方程为( )
A.
B.
C.
或
D.
或
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【单选题】Classical growth theory proposes that real GDP growth is ________ and that real GDP per person will ________ the subsistence level.
A.
permanent; temporarily be above
B.
permanent; always be above
C.
temporary; temporarily be above
D.
temporary; be above and below
查看完整题目与答案
【单选题】Classical growth theory argues that when real GDP per person rises above the subsistence level,
A.
technological change slows down, stagnating the economy.
B.
population growth increases, driving real GDP per person back to subsistence level.
C.
people don't want to work as much, decreasing labor supply.
D.
the economy enjoys a period of permanent growth.
查看完整题目与答案
【单选题】Real GDP ______ over time and the growth rate of real GDP ______.
A.
grows; fluctuates
B.
is steady; is steady
C.
grows; is steady
D.
is steady; fluctuates
查看完整题目与答案
【判断题】磷灰石属于六方晶系,晶形呈六方柱状
A.
正确
B.
错误
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【多选题】以下哪些是属于服务规范送修的关键要点
A.
迎接客户要积极
B.
维修场地随主便
C.
关怀客户需定期
D.
上门送回主动提
查看完整题目与答案
【判断题】宝石晶体外观几何形态为六方柱时,这种宝石属于六方晶系宝石 。
A.
正确
B.
错误
查看完整题目与答案
【判断题】刚玉和绿柱石常发育六方柱,他们都属于六方晶系。
A.
正确
B.
错误
查看完整题目与答案
【多选题】以下哪些是属于服务规范送修的关键要点
A.
迎接客户要积极
B.
关怀客户需定期
C.
维修场地随主便
D.
上门送回主动提
查看完整题目与答案
【判断题】红柱石属于三方晶系。晶体呈假四方柱状,横断面主要为近四方形,次为菱形,少量呈缺棱正方形及聚晶。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Long-run growth in real GDP is determined primarily by ______, while short-run movements in real GDP are associated with ______.
A.
variations in labor-market utilization; technological progress
B.
technological progress; variations in labor-market utilization
C.
money supply growth rates; changes in velocity
D.
changes in velocity; money supply growth rates
查看完整题目与答案
相关题目：
【单选题】Classical growth theory proposes that real GDP growth is ________ and that real GDP per person will ________ the subsistence level.
A.
permanent; temporarily be above
B.
permanent; always be above
C.
temporary; temporarily be above
D.
temporary; be above and below
查看完整题目与答案
【单选题】Classical growth theory argues that when real GDP per person rises above the subsistence level,
A.
technological change slows down, stagnating the economy.
B.
population growth increases, driving real GDP per person back to subsistence level.
C.
people don't want to work as much, decreasing labor supply.
D.
the economy enjoys a period of permanent growth.
查看完整题目与答案
【单选题】Real GDP ______ over time and the growth rate of real GDP ______.
A.
grows; fluctuates
B.
is steady; is steady
C.
grows; is steady
D.
is steady; fluctuates
查看完整题目与答案
【判断题】磷灰石属于六方晶系,晶形呈六方柱状
A.
正确
B.
错误
查看完整题目与答案
【多选题】以下哪些是属于服务规范送修的关键要点
A.
迎接客户要积极
B.
维修场地随主便
C.
关怀客户需定期
D.
上门送回主动提
查看完整题目与答案
【判断题】宝石晶体外观几何形态为六方柱时,这种宝石属于六方晶系宝石 。
A.
正确
B.
错误
查看完整题目与答案
【判断题】刚玉和绿柱石常发育六方柱,他们都属于六方晶系。
A.
正确
B.
错误
查看完整题目与答案
【多选题】以下哪些是属于服务规范送修的关键要点
A.
迎接客户要积极
B.
关怀客户需定期
C.
维修场地随主便
D.
上门送回主动提
查看完整题目与答案
【判断题】红柱石属于三方晶系。晶体呈假四方柱状,横断面主要为近四方形,次为菱形,少量呈缺棱正方形及聚晶。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Long-run growth in real GDP is determined primarily by ______, while short-run movements in real GDP are associated with ______.
A.
variations in labor-market utilization; technological progress
B.
technological progress; variations in labor-market utilization
C.
money supply growth rates; changes in velocity
D.
changes in velocity; money supply growth rates
查看完整题目与答案