批判性思维

Definite conditions are quite essential to constructivism teaching: Students should be the active structuralists in acquiring knowledge; they should have strong expectations for study, the ability of criticism, systematic and diffusing thinking ability, organic knowledge structure, the ability to manage the process of study and team spirit; the teacher should be the advanced companion for students in their acquisition of knowledge, master the strategies of the structural teaching, possess a democratic cons...

建构主义教学必须具备一定的条件：学生应成为知识的主动建构者，要具有强烈的学习期待，批判性、系统性、发散性思维的能力，有机的知识结构，管理学习过程的能力以及必要的团队精神；教师应成为学生建构知识的高级伙伴，掌握建构性教学的策略，要有民主的师生关系意识，宽广深厚的知识和高超的教学艺术。建构主义教学的环境应是学生建构知识的平台，因此要具备网络化的学习场所、文本化的教材、学习共同体式的班集体等要素。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。