【简答题】已知定义在R上的奇函数f(x)在区间(0,+∞)上单调递增,且 f( 1 2 )=0 ,△ABC的内角A满足f(cosA)≤0,求角A的取值范围
【单选题】已知定义在R上的奇函数 f(x)在区间(0,+∞)上单调递增,若f( 1 2 )=0,△ABC 的内角A满足f(cosA)≤0,则角A的取值范围为( )
C.
[ π 3 , π 2 ]∪[ 2 3 π,π)
【单选题】Which of the following statement about The five-elements theory is NOT true?
A.
The five-elements theory relates to concepts that were developed over time in the daily life of the people of ancient China.
B.
The five elements are water, wood, soil, fire and metal.
C.
The theory holds that these five elements are the five base materials which make up all the things in the natural world.
D.
Wood refers to the category of things that have the nature of soil and land.
【单选题】Partnering模式特别适用于()的建设工程。
【判断题】牛顿首次提出了相对时间和相对空间的概念。()
【简答题】在下列的五组视图中,其正确的两组视图是( )。
【简答题】在下列的五组视图中,其正确的两组视图是( )A. B. C. D. E.