One of the problems with the Clarke tax mechanism is that when it is used， people have an incentive to lie about their preferences.。

类别: 题库 | 2024-01-13

If a pure public good is provided by voluntary contributions， economic theory predicts that in general too little will be supplieD.。

类别: 题库 | 2024-01-13

To say that preferences are single peaked means that everybody either prefers more public goods to less or everybody prefers less public goods to more.。

类别: 题库 | 2024-01-13

According to the First Theorem of Welfare Economics：

类别: 题库 | 2024-01-13

泵的流量不随压力的变化而变化，以保证有效排粉。

类别: 题库 | 2024-01-13

说明单缸单作用往复泵的工作原理？

类别: 题库 | 2024-01-13

说明往复式泥浆泵液力端的作用？

类别: 题库 | 2024-01-13

往复泵动力端由曲柄连杆结构、十字头和其他机械传动部件。

类别: 题库 | 2024-01-13

什么是往复泵的理论平均流量？

类别: 题库 | 2024-01-13

往复泵的作用是把动力机的能量传递给活塞。

类别: 题库 | 2024-01-13