（）不能作为债券发行主体。 ["中央政府和地方政府","企业组织","金融机构","社会团体"]
You need to store elements in a collection that guarantees that no duplicates are stored. Which two interfaces provide that capability？（） [" Java.util.Map"," Java.util.Set"," Java.util.List"," Java.util.StoredSet"," Java.util.StoredMap"," Java.util.Collectio"]
贴现债券通常在票面上（），是一种折价发行的债券。 ["规定利率","不规定利率","标明折价","不标明折价"]
Which statement is true for the class java.util.ArrayList？（） [" The elements in the collection are ordered."," The collection is guaranteed to be immutable."," The elements in the collection are guaranteed to be unique."," The elements in the collection are accessed using a unique key."," The elements in the collections are guaranteed to be synchronized."]
外部误差
强化的主要操作程序和原则是什么？ 操作程序和原则
