Which of the following statements about notional principal in plain vanilla interest rate swaps is least accurate Notional principal:()

A. is not exchanged by the counterparties. 

B. is determined by the counterparties. 

C. is used to calculate the fixed rate interest payment ; the swap’s market value is used to calculate the floating rate payment.

哪一种疾病最适合用肾上腺皮质激素

A．慢性肾炎
B．急性肾炎
C．肾盂肾炎
D．肾静脉血栓形成
E．肾病综合征