消费者剩余是指消费者所获得的边际效用最大。
由于化学材料配制成的浆液中不存在固体颗粒灌浆材料那样的沉淀问题,故化学灌浆都采用()。 ["A.循环式灌浆 ","B.纯压式灌浆 ","C.气压法灌浆 ","D.泵压法灌浆"]
11. public enum Title { 12. MR(”Mr.”), MRS(”Mrs.”), MS(”Ms.”); 13. private final String title; 14. private Title(String t) { title = t; } 15. public String format(String last, String first) { 16. return title + “ “ + first + “ “ + last; 17. } 18. } 19. public static void main(String[] args) { 20. System.out.println(Title.MR.format(”Doe”, “John”)); 21. } What is the result?() [" Mr. John Doe"," An exception is thrown at runtime."," Compilation fails because of an error in line 12."," Compilation fails because of an error in line 15."," Compilation fails because of an error in line 20."]
怀特认为,行政机关享有()是立法机关所寻求的真正目标。 ["直接立法权","无限立法权","间接立法权","委托立法权"]
施工成本控制的依据有()。 ["工程承包合同","进度报告","施工组织设计","监理合同","工程变更"]
无罪推定的内核是()。