A.1/60
B.1/61
C.1/59
D.1/62
[单选题]:1+1,2+3,3+5,1+7,2+9,3+11,1+13,…第40项为( )A.1+83 B.1+81 C.1+79 D.1+77
[单选题]1+1,2+3,3+5,1+7,2+9,3+11,1+13,…第40项为( )A.1+83 B.1+81 C.1+79 D.1+77
[单选题]1,5,11,20,34,56,( )A.68B.71C.82D.91
[试题]1/2,1,1,(),9/11,11/13,A.2;B.3;C.1;D.7/9;
[试题]1/2,1,1,(),9/11,11/13A.2;B.3;C.1;D.9;
[单选题]1/2,1,1,(),9/11,11/13A .2B .3C .1D .7/9
[单选题]1/2,1,1,( ),9/11,11/13A.2B.3C.1D.7/9
[单选题]:(1 234+234 1+34 1 2+4 1 23)÷(1+2+3+4)=( )A.1003B.2000C.1111D.1000
... 4-|||-练扎-|||-钢筋 1-1 1-2 1-3 11-1 -2 11-3 -4-|||-浇混-|||-凝土 1-1 1-2 1-3 1-4 1
[题目]设 =dfrac (1)({log )_(2)11}+dfrac (1)({log )_(3)11}+dfrac (1)({log )_(4)11}+d