题目内容

专业技术人员和工人,在提交的专业技术工作总结材料方面存在问题不包含()。

A. 不按照固定的要求乱写
B. 主题不对,内容不符
C. 内容少,篇幅小
D. 内容安排混乱,层次不清

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下列()是亮度的单位

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

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.

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

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