A.12
B.14
C.16
D.18
[单选题]A.12B.14C.16D.18
[单选题]A.是所给方程的解,但不是通解B.是所给方程的解,但不一定是通解C.是所给方程的通解D.不是所给方程的通解
[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