活性维生素D对钙磷浓度调节的最终结果为()。
A.血钙升高,血磷降低
B.血钙降低,血磷升高
C.血钙升高,血磷升高
D.血钙降低,血磷降低
E.血钙、血磷浓度没有变化
参考答案:C
As some experts say, shopping by television will never take ________ place of shopping in stores,
because many people find shopping at a store is ________ great enjoyment.[ ]
A. /; a
B. the; a
C. a; the
D. a; /
儿童补液盐的处方进行了改进,新的处方中主要改进的方面是()
A.增加了氯化钾的量
B.增加了无水葡萄糖的量
C.降低了总渗透压,使在245mOsm/L
D.增加了补液的渗透压
E.维持了原氯化钾的量