【单选题】帕斯克(Pask,1976)让学生对一些想象的火星上的动物图片进行分类,发现一些学生分类时倾向于使用比较复杂的假设,每个假设同时涉及若干属性,这种策略被称为( )
【简答题】What certificates has the writer obtained? He has obtained______.
【简答题】采用预铺移设法成组更换单开道岔时,道岔的组装的方法和步骤?
【简答题】成组更换和铺设道岔有几种办法及适合在什么条件下使用?
【单选题】成组更换道岔和岔枕时,应()更换为新道砟。
【单选题】According to the text, what is not the attitude of the Writer?
A.
The writer has changed the prejudiced opinion on sunscreen cream.
B.
The writer advises people to use sunscreen cream regularly.
C.
The writer persuades the people to put the sunscreen to everyday use.
D.
The writer is supporting the new findings on sunscreen cream.
【多选题】成组更换道岔和岔枕主要内容是()。
A.
铺设新道岔和岔枕;铺设无缝道岔时,含焊接钢轨、铺设胶接绝缘钢轨(接头)并按设计锁定轨温锁定道岔,埋设位移观测桩
【单选题】225GXGZ.成组更换道岔或岔枕应(..)防护。