A、无上限值Qb>jb>≥0.051Rbhb>0b>,有下限值Qb>jb>≤0.038Rb>Lb>bhb>0b> B、有上限值Qb>jb>≤0.051Rbhb>0b>,无下限值Qb>jb>≥0.038Rb>Lb>bhb>0b> C、有上限值Qb>jb>≤0.051Rbhb>0b>,有下限值Qb>jb>≥0.038Rb>Lb>bhb>0b> D、无上限值Qb>jb>≥0.051Rbhb>0b>,无下限值Qb>jb>≥0.038Rb>Lb>bhb>0b>