A client has severe pruritus from hepatitis B. Which of the following nursing measures would best enhance the client's comfort ？（）

A．Use hot water to increase vasodilation.

B．Use cold water to decrease itching sensation.

C．Give tepid water baths.

D．Avoid lotions and creams.

在中央银行的职能中，“银行的银行”的职能主要是指（）。

A.垄断发行货币，调节货币供应量 

B.代理国库，对政府融通资金 

C.集中保存款准备金，充当最后贷款人 

D.实施货币政策，制定金融法规