药材自然铜的主要成分是()
A.四氧化三铁
B.碳酸锌
C.氯化亚汞
D.二硫化铁
E.水合硅酸镁
参考答案:D
I would have helped you, but I ________ really occupied the whole week.
A.was
B.am
C.had been
D.were
其中Ⅲ度创面的处理原则是()
A.休克期常规切痂植皮
B.开始补液后2小时内切痂
C.休克期过后半个月内切痂
D.争取复苏平稳,根据病情尽早切痂
E.休克纠正2天后分次切痂植皮