单项选择题
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
A.50℃ B.55℃ C.150℃ D.45℃
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