A.0
B.7
C.1
D.8
若连接两点(3,8,-5), B(1,12,z)的线段与平面(3,8,-5), B(1,12,z)平行则(3,8,-5), B(1,12,z)A 5 B -5
设集合A=(4,5,7),B=(3,7,9),则对称差A⨁B=( )A (3,7,9)B (3,4,5,9)C (3,4,7,9)D (3,4,5,7,
[单选题]:2/13,4/11,2/3,8/7,2,( )。A.4/5B.4C.5/3D.3
[例3]在1、2、3、4、5、6、7之间放几个"+"号,使它们-|||-的和等于100,试试看。-|||-1 2 3 4 5 6 7=100
设(5)-1 3-|||-4= 0 -2 0-|||-0 7 -1,(5)-1 3-|||-4= 0 -2 0-|||-0 7 -1,(5)-1 3-|||-4
计算:(1)23×(-5)-(-3)÷(3)/(128);(2)-7×(-3)×(-0.5)+(-12)×(-2.6);(3)(1(3)/(4)-(7)/(8)
[单选题]1, 2, 3,8, 21,46, ( )。A.70B.87C.90D.100
[主观题]a=[1,2,4,2,4,5,7,10,5,5,7,8,9,0,3],编程用sort进行排序,然后从最后一个元素开始判断?
8. 9-|||-7. 4. 1-|||-温 5 5 1 4. 7. 9.-|||-9 6 2 |1 |5 5 3 9-|||-|1 4 7 8 5 2-|||
。(1)。(2)。(3)。(4)。(5)。(6)。(7)。(8)。(1)(2)(3)(4)(5)(6)(7)(8)