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【简答题】
直流稳压电源由变压器、 ( )电路、滤波电路和( )电路组成。
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【多选题】下列对于学习数学方法的的描述正确的是?()
A.
从简单方法学起
B.
即使简单方法不能解决问题也要坚持
C.
学会灵活应变
D.
坚持用老旧方法解决新问题
【简答题】I would rather join you in research work _____ go on holiday to the seaside.
【单选题】关于Adaboost分类算法,下列描述不正确的是( )
A.
目的是从训练数据中学习一系列弱分类器或基本分类器,然后将这些弱分类器组合成一个强分类器
B.
是一种基于距离的分类算法
C.
迭代过程中,被弱分类器误分类样本的权值增大,而被正确分类样本的权值减小
D.
AdaBoost方法能“重点关注”或“聚焦于”那些较难分的样本上
【简答题】Have you ever not wanted to do something so badly that you would rather die than go? Well that’s how I about joining Madcaps, a mothers and daughters club assisting philanthropies(慈善事业).But now I beli...
【单选题】Some young people may love the busy downtown of the city, while I prefer this less popular place for it is a beautiful and charming place to relax, and most of all, to enjoy being alone. From the para...
A.
the writer is no longer young
B.
the writer prefers places full of people
C.
the writer would rather be alone than join a group of people
D.
the writer is a lonely person
【单选题】听力原文:M: We're going to have a party at our house on the weekend. Would you like to join us? W: I'd like to, and it sounds like a lot of fun. But I need to check my schedule first. Q: What does the wom...
A.
She's not interested in the party.
B.
She might have something else to do.
C.
She'd rather come some other time.
D.
She'll ask for the permission of her mom.
【单选题】—How do you find the health club? —I it. Everyone is saying its management is going from bad to worse.
A.
ought to join
B.
should have joined
C.
would rather not have joined
D.
would like to have joined
【多选题】以下关于事件序列分析方法的描述,正确的是
A.
事件序列分析是一种统计方法,用于识别行为或事件序列中的连续突发事件或交叉依赖关系
B.
与内容分析的“编码和计数”度量不同,事件序列分析涉及编码交互数据,计算不同类型交互的发生量,以及检查事件行为和想要了解的学习结果之间的关系
C.
滞后序列分析是事件序列分析的一种,可用于计算所有主要代码之间的过渡频率,预期的过渡频率,过渡概率,调整残差和标准化度量
D.
频繁序列挖掘是事件序列分析的一种,它可用于检测频繁发生的事件序列,其发生频率高于数据集中的最小频率水平
E.
事件序列分析无法与社交网络分析可视化结合来展示事件之间的关系和强度
【单选题】下列关于项目估算方法的叙述不正确的是 。
A.
专家判断方法受到专家经验和主观性影响
B.
启发式方法(如COCOMO模型)的参数难以确定
C.
机器学习方法难以描述训练数据的特征和确定其相似性
D.
结合上述三种方法可以得到精确的估算结果
【单选题】—How do you find the health club? —I . Everyone is saying its management is going from bad to worse
A.
ought to join
B.
should have joined
C.
would rather not have joined
D.
would like to have joined
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