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【判断题】
民族主义意识形态实际上是一个动员社会的有利武器。()
A.
正确
B.
错误
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参考答案：
举一反三
【单选题】下面不是特征选择降维的方法是
A.
方差阈值化
B.
递归式特征消除
C.
利用卡方统计量
D.
PCA
查看完整题目与答案
【简答题】The study of 2,000 Brits found the average wardrobe contains 152 items, but just 44 percent of these are worn regularly.
查看完整题目与答案
【多选题】下面关于特征选择与提取的说法中正确的是
A.
在分类时，特征越多越有利于分类。
B.
在不影响分类效果的前提下，特征越少越有利于分类。
C.
在特征选择中，有两个很重要的方面，一个是特征的评价准则，另外一个是特征的寻优算法。
D.
特征选择不仅可以降低特征空间的维度，还可以消除特征之间的相关性。
查看完整题目与答案
【简答题】阅读理解。 The whole morning we just checked our own things. We were looking for items to give away. We thought of blankets, food and clothing. Our aim was not to find things we no longer wanted, but thing...
查看完整题目与答案
【多选题】导游员可采取( )以预防误机事故的发生。
A.
导游员在送团前要提前做好旅游团离站交通票据的落实工作，并核对日期、班次、时间、出发机场（车站）、目的地
B.
如交通票据没落实，带团期间要随时与旅行社有关部门联系，了解班次有无变化
C.
送团前，不安排旅游团（者）到范围广、地域复杂的景点参观游览
D.
结合实际情况安排充裕的时间去机场（车站），保证旅游团（者）按规定提前到达离站地点
E.
送团前，可以安排旅游团（者）到热闹的地方购物或自由活动
查看完整题目与答案
【简答题】The whole morning we just checked our own things. We were looking for items to give away. We thought of blankets, food and clothing. Our aim was not to find things we no longer wanted, but things we u...
查看完整题目与答案
【简答题】Never go into a supermarket hungry! This is a good piece of advice. If you go shopping for food before lunchtime, you’ll probably buy more than you plan to. Unfortunately, however, just this advice is...
查看完整题目与答案
【多选题】导游员可采取()以预防误机事故的发生
A.
导游员在送团前要提前做好旅游团离站交通票据的落实工作,并核对日期、班次、时间、出发机场、目的地
B.
如交通票据没落实,带团期间要随时与旅行社有关部门联系。了解班次有无变化
C.
送团前,不安排旅游团到范围广,地域复杂的景点参观游览
D.
结合实际情况安排充裕的时间去机场,保证旅游团按规定提前到达离站地点
E.
送团前,可以安排旅游团(者)到热闹的地方购物或自由活动
查看完整题目与答案
【简答题】Traveling for business can be exhausting, especially if you have to fly internationally over just few days, or go straight to work when you arrive. Still, there are helpful things you can do before, d...
查看完整题目与答案
【单选题】A firm’s mission
A.
is a statement of a firm’s business in which it intends to compete and the customers it intends to serve.
B.
is an internally-focused affirmation of the organization’s financial, social, and ethical goals.
C.
is mainly intended to emotionally inspire employees and other stakeholders.
D.
is developed by a firm before the firm develops its vision.
查看完整题目与答案
相关题目：
【单选题】下面不是特征选择降维的方法是
A.
方差阈值化
B.
递归式特征消除
C.
利用卡方统计量
D.
PCA
查看完整题目与答案
【简答题】The study of 2,000 Brits found the average wardrobe contains 152 items, but just 44 percent of these are worn regularly.
查看完整题目与答案
【多选题】下面关于特征选择与提取的说法中正确的是
A.
在分类时，特征越多越有利于分类。
B.
在不影响分类效果的前提下，特征越少越有利于分类。
C.
在特征选择中，有两个很重要的方面，一个是特征的评价准则，另外一个是特征的寻优算法。
D.
特征选择不仅可以降低特征空间的维度，还可以消除特征之间的相关性。
查看完整题目与答案
【简答题】阅读理解。 The whole morning we just checked our own things. We were looking for items to give away. We thought of blankets, food and clothing. Our aim was not to find things we no longer wanted, but thing...
查看完整题目与答案
【多选题】导游员可采取( )以预防误机事故的发生。
A.
导游员在送团前要提前做好旅游团离站交通票据的落实工作，并核对日期、班次、时间、出发机场（车站）、目的地
B.
如交通票据没落实，带团期间要随时与旅行社有关部门联系，了解班次有无变化
C.
送团前，不安排旅游团（者）到范围广、地域复杂的景点参观游览
D.
结合实际情况安排充裕的时间去机场（车站），保证旅游团（者）按规定提前到达离站地点
E.
送团前，可以安排旅游团（者）到热闹的地方购物或自由活动
查看完整题目与答案
【简答题】The whole morning we just checked our own things. We were looking for items to give away. We thought of blankets, food and clothing. Our aim was not to find things we no longer wanted, but things we u...
查看完整题目与答案
【简答题】Never go into a supermarket hungry! This is a good piece of advice. If you go shopping for food before lunchtime, you’ll probably buy more than you plan to. Unfortunately, however, just this advice is...
查看完整题目与答案
【多选题】导游员可采取()以预防误机事故的发生
A.
导游员在送团前要提前做好旅游团离站交通票据的落实工作,并核对日期、班次、时间、出发机场、目的地
B.
如交通票据没落实,带团期间要随时与旅行社有关部门联系。了解班次有无变化
C.
送团前,不安排旅游团到范围广,地域复杂的景点参观游览
D.
结合实际情况安排充裕的时间去机场,保证旅游团按规定提前到达离站地点
E.
送团前,可以安排旅游团(者)到热闹的地方购物或自由活动
查看完整题目与答案
【简答题】Traveling for business can be exhausting, especially if you have to fly internationally over just few days, or go straight to work when you arrive. Still, there are helpful things you can do before, d...
查看完整题目与答案
【单选题】A firm’s mission
A.
is a statement of a firm’s business in which it intends to compete and the customers it intends to serve.
B.
is an internally-focused affirmation of the organization’s financial, social, and ethical goals.
C.
is mainly intended to emotionally inspire employees and other stakeholders.
D.
is developed by a firm before the firm develops its vision.
查看完整题目与答案
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