【简答题】16世纪中叶之前的海权最强国是______。欧洲列强在1756~1763年发生的战争又叫______。
【单选题】The international community should reach a broad ______ on the matter and jointly tackle any major security concern by dialogues and cooperation.
【判断题】从总体中随机抽取一部分单位作为样本进行调查,并根据样本调查结果来推断总体特征的数据收集方法 ,是抽样调查又称非全面调查。
【简答题】(1756-1763) was a European conflict, with Britain and Prussia against France, Austria and the allies.
【判断题】The Seven Years’ War from 1756 to 1763 was fought between Ireland and Britain.
【单选题】How does a mule work?
【单选题】The machines in this workshop are not regulated ______ but are jointly controlled by a central computer system.
【判断题】统计研究的个体就是对作物的某一性状或试验指标通过观察、测量所获得的一个观测值。相应的总体是某处理小区产量观测值的全体。根据总体全部个体计算所得的总体特征数称为参数, 总体参数通常用希腊字母表示,如总体平均数 μ ,总体标准差 σ 等。