题目内容
RF
A. rheumatoid factor
B. rheumatoid arthritis
C. rheumatoid spondylitis
D. rheumatid
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SARS
A. severe acute respiratory syndrome
B. severe acute respiratory symptom
C. severe acute respiration syndrome
D. severe acute respiration symptom
CNS
A. central nervous system
B. congress of neurological surgeons
China national standards
D. coagulase negative staphylococci