题目内容

下列（）是亮度的单位

A. Ix
B. Cd
C. Im
D. Cd/m2

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public class Person { private name； public Person（String name） { this.name = name； } public int hashCode（） { return 420； } } Which is true？（）

A. The time to find the value from HashMap with a Person key depends on the size of the map.
B. Deleting a Person key from a HashMap will delete all map entries for all keys of typePerson.
C. Inserting a second Person object into a HashSet will cause the first Person object to beremoved as a duplicate.
D. The time to determine whether a Person object is contained in a HashSet is constant and does NOT depend on the size of the map.

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