我国古代经济重心的南移于唐朝时完成。[ ]
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孕16周末
A.35cm,1000gB.45cm,2500gC.16cm,110gD.25cm,320gE.50cm,3400g胎儿身长,体重
肝硬化门静脉压增高到什么水平可引起腹腔积液()
A.0.98~1.47kPa(100~150mmH2O)
B.1.48~1.96kPa(151~200mmH2O)
C.1.97~2.45kPa(201~250mmH2O)
D.2.46~2.93kPa(251~299mmH2O)
E.>2.94kPa(>300mmH2O)