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【简答题】
已知函数 f(x)= x-a x-2 (1)若a∈N * ,且函数f(x)在区间(2,+∞)上是减函数,求a的值; (2)若a∈R,且关于x的方程f(x)=-x有且只有一根落在区间(-2,-1)内,求a的取值范围; (3)在(1)的条件下,若对于区间[3,4]上的每一个x的值,不等式f(x)>m-x -3 恒成立,求实数m的取值范围.
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举一反三
【单选题】将两个以上的不同空间,放在相毗邻的位置上,其构成的相互关系称为?
A.
空间的序列
B.
空间的层析
C.
空间的层次
D.
空间的对比
【简答题】上图中“科”的意思是
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A.
A box of chocolate.
B.
Some perfume.
C.
A scarf.
D.
A bunch of flowers.
【多选题】常用的衡量国际金融市场一体化的方法包括( )。
A.
抛补利率平价
B.
非抛补利率平价
C.
实际利率平价
D.
储蓄与投资模型
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A.
Everything was natural and genuine then.
B.
People had plenty of land to cultivate then.
C.
It marked the beginning of something new.
D.
It was when her ancestors came to America.
【单选题】Why does the speaker say she would like to go back and live in the 18th century America?
A.
Everything was natural and genuine then.
B.
People had plenty of land to cultivate then.
C.
It marked the beginning of something new.
D.
It was when her ancestors came to America.
【单选题】发动机进气岐管真空度的正常值为( ) kPa。
A.
30~45
B.
40~50
C.
57~70
D.
80~100
【多选题】金融市场一体化的衡量方法,包括( )
A.
抛补利率平价
B.
非抛补利率平价
C.
实际利率平价
D.
储蓄与投资模型
【多选题】在衡量金融市场一体化的四种方法中,价格型评价方法包括()
A.
抛补利率平价
B.
非抛补利率平价
C.
实际利率平价
D.
储蓄与投资模型
【简答题】Susan and Laura are twins. They were born in ahospital in New York in 1943.When they were only two weeks old, their parentswere killed in a car accident. There was nobody to look after the two babygir...
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