在现实生活中，有的人在与别人交往时游刃有余，人际关系和谐；但有的人到处碰壁，人际关系紧张，其中的原因是（） ["沟通能力的强弱","人缘的好坏","人品的好坏","朋友的多少"]
Which two statements are true about the hashCode method？（） [" The hashCode method for a given class can be used to test for object equality and object inequality for that class."," The hashCode method is used by the java.util.SortedSet collection class to order theelements within that set."," The hashCode method for a given class can be used to test for object inequality， but NOT object equality， for that class."," The only important characteristic of the values returned by a hashCode method is that the distribution of values must follow a Gaussian distribution."," The hashCode method is used by the java.util.HashSet collection class to group the elements within that set into hash buckets for swift retrieval."]
中长跑的教学特点有哪些？
以下哪种能力是自古至今衡量文秘人员的水平的主要标准（） ["听知能力","观察能力","口语表达能力","书面表达能力"]
简述聚合物中的低分子物（溶剂或增塑剂）对取向的影响。
法国政府发布政令，将各种教育机构的名称统一为“母育学校”的时间是（）
