:(0.34×2400×0.25+3×3(3/4)+26.25÷(1/3))÷(2/13)+8的值为( )。
A.1832
B.1919
C.2000
D.3020
[单选题]计算(0.34×2400×0.25+3×+26.25÷)÷的值是( )。A. 1989B. 1999C. 2009D. 1979
[试题]计算:(1)-34(2)-(-3)3(3)-(-2/3)4(4)(4/5)2(5)-3/22(6)-(-2/5)3
[单选题]-1 1 -4/3 2 ( ) 16/3A.13/4B. –16/5C.-13/4D.16/5
[单选题]-1 1 -4/3 2 ( ) 16/3A.13/4 B. –16/5 C-13/4 D.16/5
[单选题]1×2×3+2×3×4+3×4×5+…+28×29×30=( )。A.188690B.188790C.188890D.188990
[单选题]桩的长度为根长的A.1/3~3/4B.1/2~3/4C.2/3~3/4D.1/2~2/3E.1/4~2/3
[单选题]1 2 1 3 1 4 4 3 15 7 ? 13A.18 B.20 C.24 D.40
[试题]计算。236+64=1-0.25=312÷3=5.01-1.8=1.63+2.3=1.25×8=3.8÷4=3.75÷0.25=0.72÷0.6=1/6+3/8=18×2/3=16/9÷2/3=
[问答题]设向量组α1=(1,2,3,4),α2=(2,3,4,5,),α3=(3,4,5,6),α4=(4,5,6,7),则秩(α1,α2,α3,α4)=--
[问答题]设向量组α1=(1,2,3,4),α2=(2,3,4,5,),α3=(3,4,5,6),α4=(4,5,6,7),则秩(α1,α2,α3,α4)=--