单项选择题
A.0.02~0.03 B.0.05~0.10 C.0.10~0.15 D.0.15~0.20
A.800mm B.900mm C.1000mm D.1050mm
A.kgf/cm2 B.tf/m2 C.Pa; D.at
A.小于1‟ B.不于5‟ C.不大于2‟ D.不允许有误差
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