单项选择题
A.6小时 B.12小时 C.18小时 D.24小时
A.80%~100% B.100%~120% C.90%~110% D.80%~120%
A.150mg B.200mg C.250mg D.300mg
A.青霉素钾(t1/20.7h) B.异烟肼(t1/23.5h) C.硝酸甘油(t1/22.8min) D.地高辛(t1/272h)
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