【多选题】 下列条件中,加权算术平均数等于简单算术平均数的情况( )
【判断题】商周时期的青铜器装饰图案以饕餮纹、夔纹和云雷纹最具有代表性。
【单选题】According to the passage, for which of the following reasons are the late seventeenth and early eighteenth-century Chinese records important?
A.
They contradict the theory of the Maunder minimum.
B.
They suggest that the Maunder minimum cannot be related to climate.
C.
They verify the existence of a span of unusual cold worldwide during the Maunder minimum.
D.
They show that the European observations are of dubious statistical significance.
【单选题】标明货物已经正确地装上船的提单被称为( )。
【单选题】The author includes a discussion of the American black bear, Ursus americanus, most likely in order to
A.
provide additional support for the unique feeding habits of bears
B.
discount the theory regarding a bear's ability to remain well fed
C.
evaluate the dispute between advocates of differing theories regarding bear behavior
D.
challenge recent research on the way in which bears secure food
E.
suggest further investigation of human interaction with bears
【判断题】商周时期的青铜器装饰图案以饕餮纹、夔纹和云雷纹最具有代表性。
【多选题】 企业在聘用职工时必须遵守的原则有( )
【单选题】下列不属于工程施工索赔应遵循的原则的是( )。