金黄色葡萄球菌食物中毒的潜伏期一般为()
A.30min~1h
B.2~5h
C.6~12h
D.14~24h
E.48~72h
参考答案:B
Zhengzhou was attacked by such a terrible sandstorm ________ few residents had ever experienced before.
A.which
B.as
C.where
D.that
护士挤压胸腔引流管的目的是()
A.防止引流管打折
B.重建胸腔负压
C.保持引流管通畅
D.防止引流液倒流
E.预防感染