钢结构的可靠性是结构安全性、适用性、耐久性的总称，结构的可靠性用______来度量。
参考答案：可靠指标(或可靠度)
感受器有哪些共同生理特征（）
A.需适宜刺激
B.有感觉阈值
C.容易疲劳
D.有适应现象
E.有换能作用
The schema theory is an important element in ______ , which is "action-based", more concerned with the process of learning than what is learnt.
A. Brunner's method B. Ausubel's theory C. Kelly's theory D. Piaget's theory
