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单项选择题
A.6.00kPa (45mm Hg)
B.6.67kPa (50mm Hg)
C.8.00kPa (60mm Hg)
D.9.33kPa (70mm Hg)
E.10.7kPa (80mm Hg)
单项选择题
A.<1.33kPa (10mm Hg)
B.1.33~2.00kPa (10~15mm Hg)
C.2.00~2.67kPa (15~20mm Hg)
D.2.67~5.33kPa (20~40mm Hg)
E.>5.33kPa (40mm Hg)