发生羊水栓塞时紧急处理,进行下腔静脉保留插管,其目的是().
A.抽血检测羊水成分
B.既可测量静脉压,又可抽血检测羊水成分
C.测量静脉压
D.输液
E.经静脉补充营养
参考答案:B
— Do I have to sell my old computer? It almost stops working.
— You ________ do so, it only needs ________. Something has gone wrong with it.
A.mustn’t; to repair
B.can’t; repairing
C.needn’t; repairing
D.may not; to repair
免疫酶组织化学染色的对照实验不包括()
A.吸收实验
B.凝集实验
C.置换实验
D.阳性对照
E.替代实验