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【单选题】
国防法规是国家为了加强防务,特别是加强( ),用法律形式确定并以国家手段保证其实施的行为规则的总称。
A.
武装力量建设
B.
民兵建设
C.
预备役建设
D.
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【简答题】身既死兮神以灵, 。
【单选题】The world's deepest cave, Pierre St. Martin in the Pyrenees mountains, is almost three times as deep ______.
A.
as the Empire State Building is high
B.
that the Empire State Building is higher
C.
is higher than the Empire State Building
D.
and the Empire State Building's height
【单选题】已知点A(0,b),B为椭圆 x 2 a 2 + y 2 b 2 =1(a>b>0)的左准线与x轴的交点,若线段AB的中点C在椭圆上,则该椭圆的离心率为(  )
A.
3
B.
3 2
C.
3 3
D.
3 4
【简答题】巴黎的() ,是法国历史上第一个公共花园
【单选题】已知点A(4,1),B(2,3),则线段AB的垂直平分线方程为( )
A.
x-y+1=0
B.
x+y-5=0
C.
x-y-1=0
D.
x-2y+1=0
【单选题】已知点A(0,0),B(4,-2),则线段AB的中点坐标为( )
A.
(2,-1)
B.
(-2,1)
C.
(-2,4)
D.
(0,0)
【判断题】肋片是依附于基础表面上的扩展表面,是有效增加换热面积的方法。
A.
正确
B.
错误
【单选题】已知抛物线y=ax 2 -4ax+h(a≠0)与x轴交于A(x 1 ,0),B(3,0)两点,则线段AB的长度为(  )
A.
1
B.
2
C.
3
D.
4
【单选题】The waters of this great lake, which is also the world's deepest, have been ____ by waste from
A.
105. The waters of this great lake, which is also the world's deepest, have been ____ by waste from a chemical factory. A.cleaned
B.
cleared
C.
dirtied
D.
Thrown
【单选题】已知点A(-4,0),B(2,-4),则线段AB的中点坐标是( )
A.
(-2,-4)
B.
(-1,-2)
C.
(0,0)
D.
(1,2)
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