【单选题】以点 ( 3 ,-4 ) 为圆心,并且过点 (6 , 0 )的圆的方程为
A.
( x - 3 ) ² +( y + 4 ) ²=16
B.
( x - 3 ) ² +( y + 4 ) ²=25
C.
( x + 3 ) ² +( y - 4 ) ²=25
D.
( x + 3 ) ² +( y - 4 ) ²=16
【多选题】投标人接到中标通知书后,中标人与发包人依据什么签订工程承发包合同(施工合同)?()
【单选题】There ____ a sports meeting this Saturday morning. A will be B would be C be D are
【简答题】已知椭圆的中心在原点,焦点在y轴上,离心率为 ,且椭圆经过圆C:x 2 +y 2 ﹣3x+4y=0的圆心C. (1)求椭圆的标准方程; (2)设直线l:y=kx+1与椭圆交于A,B两点,点P(0, )且|PA|=|PB|,求直线的方程.
【单选题】Why is a “full English breakfast” so called? a Be b Be c Be
A.
a Bcause it contains all the different types of food: bacon, eggs, sausages, etc.
B.
b Bcause it makes your stomach feel full.
C.
c Because you pay full price for it.
【单选题】中国最早的壁画是在以下哪个省发现的?()
【单选题】应用文语言要求用词造句要规范,符合现代语法规律,要求语言( )
【单选题】Let p1 and p2 be pointer variables pointing to the same string, and c be character variables, then the following assignment statement that cannot be executed correctly is ( ).
【判断题】凝汽器的真空变大时,其内蒸汽的绝对压力也变大。