处理问题期间必须()刮板输送机电源,()刮板输送机,严禁非作业人员操作。
A.送上
B.切断
C.打开
D.闭锁
参考答案:B, D
The College Entrance Examination is coming soon, many students in senior 3 think that time is limited, and they care little about their rest time. Some of them give up their noon break or even stay up too late.
注意:① 无需写标题,不得照抄英语提示语;
② 除诗歌外,文体不限;
③ 文中不得透露个人姓名和学校名称;
④ 词数为120左右
任何行为都是由特定环境(或情境)决定的,都是在“刺激一反应”的条件反射中形成的。这是()的观点。
A.行为主义学习理论
B.社会学习理论
C.建构主义理论
D.情境认知理论