单项选择题
A.偏高 B.相等 C.偏低
A.0.05MPA B.0.5MPA C.0.05KPA D.0.5KPA
A.0.1MPA B.0.15MPA C.0.05KPA D.0.5KPA
A.0.15MPA B.0.55MPA C.0.05KPA D.0.5KPA
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