简述道德理想、道德原则、道德规范的关系。
在低气温下进行高处作业时间不宜超过()h。 ["0.5","1","1.5","2"]
1. import java.util.*; 2. public class Example { 3. public static void main(String[] args) { 4. // insert code here 5. set.add(new integer(2)); 6. set.add(new integer(l)); 7. System.out.println(set); 8. } 9. } Which code, inserted at line 4, guarantees that this program will output [1,2]? () [" Set set = new TreeSet();"," Set set = new HashSet();"," Set set = new SortedSet();"," List set = new SortedList();"," Set set = new LinkedHashSet();"]
柳永《八声甘州》(对萧萧暮雨)。一词表达了什么样的情绪()。 ["怀才不遇","伤春惜别","羁旅思归","怀古叹今"]
一种学习对另一种学习的影响称为学习的() ["强化","迁移","反馈","联结"]
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