铝的密度是2.7×103kg/m3,表示的物理含义是 ,将铝块切去1/3,剩余部分的密度是 ,合 g/cm3.
1m3的铝质量为2.7×103kg;2.7×103kg/m3;2.7
--- What’s wrong with my son, doctor?
--- ____________ serious, just a slight cold. He’d better drink some water.
A.Everything
B.Nothing
C.Something
D.Anything
称为败血症热型,体温在39℃以上,波动幅度大,24小时内波动范围超过2℃,体温最低时仍高于正常。此热型是
A.回归热B.弛张热C.间歇热D.稽留热E.波状热