O3和O2是( )
A.同分异构体
B.同种物质
C.氧的同素异形体
D.氧的同位素
因同素异形体是由同一元素形成的不同单质,而O3和O2是由氧元素形成的两种不同单质,故选:C.
计算商业银行特定客户的信用风险,需要()变量。
A.违约概率
B.违约损失率
C.违约风险暴露
D.期限
E.行业风险指数
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.