
A.2.81m,1.99m
B.2.91m,2.09m
C.2.91m,2.19m
D.3.11m,2.29m
[单选题]A.49.6%B.50.6%C.51.1%D.51.6%
[单选题]A.2.81m,1.99mB.2.91m,2.09mC.2.91m,2.19mD.3.11m,2.29m
[单选题]A.28500B.28800C.27000D.28650
[单选题]A.>101.325kPaB.=101.325kPaC.<101.325kPaD.不能确定
[单选题]A.直线B.圆C.正弦曲线D.椭圆
[单选题]A.68.8B.73.5C.85.3D.78.1
[单选题]A.1:2B.1:4C.1:1D.1:8
[单选题]A.>101.325kPaB.=101.325kPaC.<101.325kPaD.不能确定
[单选题]A.直线B.圆C.正弦曲线D.椭圆
[单选题]A.5.00B.6.00C.9.00D.11.00