支气管扩张症最可靠的确诊依据是（）。

A.咳大量脓痰

B.反复咯血

C.支气管碘油造影确诊

D.胸部X线检查

E.局限性湿啰音

A certified nursing assistant (CNA) is caring for a client with Clostridium difficile diarrhea and asks the charge nurse, "How can I keep from catching this from the client" The nurse reminds the CNA to wash her hands and to ensure the client is placed

A. on protective isolation.
B. on neutropenic precautions.
C. in a negative-pressure room.
D. on contact isolation.