A.成绩/m1.551.601.651.701.751.80人数143462
B.这些运动员成绩的众数是
C.1.65
D.1.70
E.1.75
F.1
A.175:X = 7:1
B.X:175 = 7:1
C.1:7 = 175:X
D.1.75:X = 7:1
A.1 830 J
B.1 470 J
C.630 J
D.270 J
A.(250万-20万)/13500万=1.70%
B.(250万-2万)/13500万=1.83%
C.(250万-22万)/13500万=1.68%
D.以上都不对