Which of the following is least likely to be cited as a limitation of discretionary fiscal policy stabilizers（）

A. Changes in the business cycle are difficult to predict.

B. Taxes paid by households increase as incomes rise.

C. Legal changes are delayed while legislators debate fiscal policy issues.

世行、亚行贷款项目采购的最大特点是( )。

A．世行、亚行对采购的审查和不反对

B．利益冲突原则

C．咨询服务采购采用最高分中标的评审办法

D．工程和货物招标采用最低评标价中标的评标方法

E．合格性原则