your mother have a ping-pang bat? [ ]
A. do
B. does
C. Do
D. Does
B
《中国药典》2010年版规定的粉末规格有()
A.5种
B.6种
C.7种
D.8种
E.9种
静脉补钾时,补钾浓度不能超过
A.5%
B.3%
C.0.3%
D.0.5%
E.0.15%