单项选择题

A.0.7MPa,0.6MPa,1.2MPa,1.5MPa
B.0.8MPa,1MPa、1.3MPa,1.6MPa
C.0.9MPa,1.1MPa,1.4MPa,1.7MPa
D.1MPa,1.2MPa,4.5MPa,1.7MPa