【单选题】3 yo female patient with bacterial meningitis Speciation: Streptococcus Pneumoniae She is Penicillin resistant and Cephalosporin sensitive What is the duration treatment for this patient?
【单选题】If a financial institution has 50% of its portfolio in a bond with a five-year duration and 50% of its portfolio in a bond with a seven-year duration, what is the duration of the portfolio?