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.
查看答案
国家全球竞争力排名的依据是()
A. 宏观经济指数
B. 技术指数
C. 政府支出
D. 公共机构质量
离心泵停车时,先关闭泵的出口阀门,以避免压出管内的液体倒流。
A. 正确
B. 错误
按菌体的轮廓、基本形成,可将细菌分成球菌、杆菌和螺旋菌。球菌的直径约()
A. 0.5-1m
B. 0.3-2m
C. 1-2m
D. 1-5m
上颌一侧切牙缺失,对侧同名牙轻度外翻,修复时该侧切牙的正确排列应该是()
A. 按缺隙大小排牙
B. 按一般扭转度排牙
C. 对称地将人工牙排成轻度外翻
D. 按邻牙弧度排牙
E. 按咬合关系排牙