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【判断题】
所谓半数平均法就是用动态数列的一半去测定数列长期趋势。
A.
正确
B.
错误
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举一反三
【单选题】Work means much to me. It is ______ of my life ______ air, water and sunlight.
A.
as much a part; as
B.
as a part as much; as
C.
as a part much; as
D.
so much a part; as
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【单选题】In my opinion, life in the twentyfirst century is much easier than ________. [ ]
A.
those used to be
B.
it is used to
C.
it was used to
D.
it used to be
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【简答题】已知点A的坐标是(4,-2),以A为圆心作圆.若⊙A上有且只有两点到x轴的距离为1,则⊙A的半径r的取值范围是______.
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【单选题】已知焦点在x轴上、中心在原点的椭圆上一点到两焦点的距离之和为4,若该椭圆的离心率 3 2 ,则椭圆的方程是( )
A.
x 2 4 + y 2 =1
B.
x 2 + y 2 4 =1
C.
x 2 4 + y 2 3 =1
D.
x 2 3 + y 2 4 =1
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【单选题】In my opinion, life in the twentyfirst century is much easier than . [ ]
A.
that used to be
B.
it is used to
C.
it was used to
D.
it used to be
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【简答题】项目按照所处阶段的预算分类包括
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【单选题】My life is ______ good in the US. [ ]
A.
very much
B.
much
C.
pretty
D.
more
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【简答题】如图,从圆O外一点A引圆的切线AD和割线ABC,已知AD=2 3 ,AC=6,圆O的半径为3,则圆心O到AC的距离为______.
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【简答题】如图,从圆O外一点A引圆的切线AD和割线ABC,已知 AD=4 2 ,圆O的半径r=AB=4,则圆心O到AC的距离为______.
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【简答题】索引的优缺点,如何进行索引碎片整理
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相关题目:
【单选题】Work means much to me. It is ______ of my life ______ air, water and sunlight.
A.
as much a part; as
B.
as a part as much; as
C.
as a part much; as
D.
so much a part; as
查看完整题目与答案
【单选题】In my opinion, life in the twentyfirst century is much easier than ________. [ ]
A.
those used to be
B.
it is used to
C.
it was used to
D.
it used to be
查看完整题目与答案
【简答题】已知点A的坐标是(4,-2),以A为圆心作圆.若⊙A上有且只有两点到x轴的距离为1,则⊙A的半径r的取值范围是______.
查看完整题目与答案
【单选题】已知焦点在x轴上、中心在原点的椭圆上一点到两焦点的距离之和为4,若该椭圆的离心率 3 2 ,则椭圆的方程是( )
A.
x 2 4 + y 2 =1
B.
x 2 + y 2 4 =1
C.
x 2 4 + y 2 3 =1
D.
x 2 3 + y 2 4 =1
查看完整题目与答案
【单选题】In my opinion, life in the twentyfirst century is much easier than . [ ]
A.
that used to be
B.
it is used to
C.
it was used to
D.
it used to be
查看完整题目与答案
【简答题】项目按照所处阶段的预算分类包括
查看完整题目与答案
【单选题】My life is ______ good in the US. [ ]
A.
very much
B.
much
C.
pretty
D.
more
查看完整题目与答案
【简答题】如图,从圆O外一点A引圆的切线AD和割线ABC,已知AD=2 3 ,AC=6,圆O的半径为3,则圆心O到AC的距离为______.
查看完整题目与答案
【简答题】如图,从圆O外一点A引圆的切线AD和割线ABC,已知 AD=4 2 ,圆O的半径r=AB=4,则圆心O到AC的距离为______.
查看完整题目与答案
【简答题】索引的优缺点,如何进行索引碎片整理
查看完整题目与答案
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