对交联高聚物，以下的力学松弛行为哪一条正确（）A、蠕变能回复_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

对交联高聚物，以下的力学松弛行为哪一条正确（）

A、蠕变能回复到零

B、应力松弛时应力能衰减到零

C、可用四元件模型模拟

答案

参考答案：A

问答题简答题

车站调车工作由谁领导？

单项选择题

Questions 14-23

·Look at the ten statements for this part.
·You will hear a passage about "A Research on Sleep ". You will listen to it twice.
·Decide whetheryou think each statement is right(R), wrong(W) or not mentioned(NM).
·Mark your answers on the Answer Sheet.

Before one reaches the deepest sleep, loss of consciousness has already occurred.

A. Right
B. Wrong

C. Not Mentioned