单项选择题
A.0.1~0.7MPa B.0.7~17.5MPa C.17.5~30MPa D.30~40MPa
A.1000~1500r/min B.1500~2500r/min C.2500~5000r/min D.5000~10000r/min
A.0.01~0.02mm B.0.02~0.025mm C.0.025~0.04mm D.0.04~0.05mm