【单选题】ABC superfamily proteins are thought to act as ATP-dependent flippases in transporting
A.
lipophilic drugs out of mammalian cells.
B.
Ca2+ out of mammalian cells
C.
H+ out of mammalian cells.
D.
Na+ out of mammalian cells, K+ into mammalian cells.
【单选题】Y,d连接组别的变压器,若一次绕组、二次绕组的额定电压为220kV/110kV,则该变压器一次绕组、二次绕组的匝数比为()
【简答题】何谓“临界操作”和“特殊操作"?通常有哪些项目?如何从事这些操作?
【简答题】免疫球蛋白超家族(ig-supemily)
【单选题】Y,d连接组别的变压器,若一次绕组、二次绕组的额定电压为220KV/110KV,则该变压器一次绕组、二次绕组的匝数比为()。
【简答题】免疫球蛋白超家族(immunoglobulin supemily,IgSF)(名词解释)
【简答题】基因超家族(gene supemily)