肌肉注射某种药物,若作跟踪检查,则最先应从心脏的哪个腔发现这

肌肉注射某种药物,若作跟踪检查,则最先应从心脏的哪个腔发现这种药物?(  

A.左心房     B.左心室     C.右心房      D.右心室

答案

C

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