NO具有多种心血管作用，下列哪些是正确的（）。

A.抗血小板与血细胞的粘附

B.抗血小板聚集

C.抗血管平滑肌的增生

D.舒张血管平滑肌

E.强心作用

Which of the following statements about swaps is least accurate()

A. Swaps typically have zero value at initiation. 

B. Swaps can have significant default risk. 

C. Parties to swap contracts are often individual speculators.