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【单选题】
已知αAB=240°，则αBA=（ ）
A.
60°
B.
150°
C.
330°
D.
420°
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参考解析：
知识点：
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举一反三
【单选题】When did her mother put Christmas presents in her stockings?
A.
On Christmas Eve.
B.
Every night.
C.
On Christmas night.
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【简答题】有一半径为R的均匀带电球体，电荷体密度为+ρ，今沿球体直径挖一细隧道，设挖隧道前后其电场分布不变，如图所示。现在洞口处由静止释放一点电荷-q，其质量为m，重力在此忽略不计。试分析点电荷在隧道内的运动规律。
查看完整题目与答案
【单选题】---When is Christmas? --- It’s _____ December 25.
A.
in
B.
to
C.
on
D.
at
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【单选题】下列不是流媒体文件格式的是()
A.
RM
B.
ASF
C.
FLV
D.
MP3
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【判断题】赫希曼—赫芬达尔指数越大，市场竞争程度越高。（ ）
A.
正确
B.
错误
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【单选题】人类从单纯获取天然产物转变为开始种植农业发生在大约公元前()左右。
A.
五千年
B.
八千年
C.
九千年
D.
一万年
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【单选题】When Christmas Day is coming, the parents .
A.
usually tell their children that Father Christmas isn't real
B.
sometimes tell their children that Father Christmas comes during the day
C.
tell their children that Father Christmas comes during the night and brings presents to good children
D.
often tell their children that Father Christmas gives presents to poor children
查看完整题目与答案
【多选题】下列是流媒体格式的文件是( )
A.
flv
B.
7z
C.
ra
D.
rm
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【单选题】In 'LoveActually', Harry is not happy with ()when he is doing Christmas shopping with his wife.
A.
Mia
B.
the sales clerk
C.
his employee
D.
his child
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【单选题】四企业集中程度越高，行业内的竞争性_________；赫芬达尔一赫希曼指数越大，行业内的竞争性_________。
A.
越强；越强
B.
越强；越弱
C.
越弱；越强
D.
越弱；越弱
E.
这个问题的前提是错误的，因为四企业集中率只适用于市场内只有四家企业的市场，根据定义，这样的市场是没有竞争性的
查看完整题目与答案
相关题目：
【单选题】When did her mother put Christmas presents in her stockings?
A.
On Christmas Eve.
B.
Every night.
C.
On Christmas night.
查看完整题目与答案
【简答题】有一半径为R的均匀带电球体，电荷体密度为+ρ，今沿球体直径挖一细隧道，设挖隧道前后其电场分布不变，如图所示。现在洞口处由静止释放一点电荷-q，其质量为m，重力在此忽略不计。试分析点电荷在隧道内的运动规律。
查看完整题目与答案
【单选题】---When is Christmas? --- It’s _____ December 25.
A.
in
B.
to
C.
on
D.
at
查看完整题目与答案
【单选题】下列不是流媒体文件格式的是()
A.
RM
B.
ASF
C.
FLV
D.
MP3
查看完整题目与答案
【判断题】赫希曼—赫芬达尔指数越大，市场竞争程度越高。（ ）
A.
正确
B.
错误
查看完整题目与答案
【单选题】人类从单纯获取天然产物转变为开始种植农业发生在大约公元前()左右。
A.
五千年
B.
八千年
C.
九千年
D.
一万年
查看完整题目与答案
【单选题】When Christmas Day is coming, the parents .
A.
usually tell their children that Father Christmas isn't real
B.
sometimes tell their children that Father Christmas comes during the day
C.
tell their children that Father Christmas comes during the night and brings presents to good children
D.
often tell their children that Father Christmas gives presents to poor children
查看完整题目与答案
【多选题】下列是流媒体格式的文件是( )
A.
flv
B.
7z
C.
ra
D.
rm
查看完整题目与答案
【单选题】In 'LoveActually', Harry is not happy with ()when he is doing Christmas shopping with his wife.
A.
Mia
B.
the sales clerk
C.
his employee
D.
his child
查看完整题目与答案
【单选题】四企业集中程度越高，行业内的竞争性_________；赫芬达尔一赫希曼指数越大，行业内的竞争性_________。
A.
越强；越强
B.
越强；越弱
C.
越弱；越强
D.
越弱；越弱
E.
这个问题的前提是错误的，因为四企业集中率只适用于市场内只有四家企业的市场，根据定义，这样的市场是没有竞争性的
查看完整题目与答案