对α受体和β受体都有阻断作用的药物是
A.普萘洛尔
B.醋丁洛尔
C.拉贝洛尔
D.阿替洛尔
E.吲哚洛尔
参考答案:C
As the years passed, many _________—birthdays, awards, graduations—were marked with Dad’s flowers.
A.conditions
B.examples
C.occasions
D.States
医嘱静脉补钾,用于稀释10%氯化钾30ml需要的溶液量至少为()
A.500ml
B.1000ml
C.1500ml
D.2000ml
E.2500ml