Which of the following measures would the nurse take into consider to help minimize joint pain in a child with rheumatic fever

A．Massaging the affected joints.

B．Applying ice to the affected joints.

C．Limiting movement of the affected joints.

D．Encouraging progressive weight bearing.

A注册会计师负责对丁公司2009年度财务报表进行审计。在运用审计抽样时，A注册会计师遇到下列问题，请代为做出正确的专业判断。

下列对PPS抽样的理解正确的有( )。

A．PPS抽样通过属性抽样的样本错报率来推断总体错报率进而推断总体错报金额的方法

B．PPS抽样的样本规模需要注册会计师考虑被审计金额的预计变异性

C．PPS抽样对零余额或负余额的选取需要在设计时特别考虑

D．PPS抽样的样本规模在预计没有错报时通常比传统变量抽样方法小