低渗性脱水、重度缺钠、周围循环衰竭时,应快速输入()
A.5%氯化钠溶液
B.复方氯化钠溶液
C.平衡盐溶液
D.晶体溶液和胶体溶液
E.晶体溶液和升压药物
参考答案:D
写出下列命题的“¬p”命题:若abc=0,则a,b,c中至少有一个为0.______.
Bob would have helped us yesterday, but he ____________.
A.is busy
B.had been busy
C.has been busy
D.was busy