[问答题]--------------.
[问答题]--------------.
[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