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【简答题】
Did you know that the position you choose to sleep in says something about what kind of person you are? A study of 1,000British people has been done by Chris,a British professor and director of the Sleep Assessment and Advisory Service in the UK.It looked at the six most common sleeping positions and which personalities tend to match them.Have a look. 1. Fetus (胎儿) position – This is the most common sleeping position. About 41 percent of the participants said they sleep in this position. These sleepers may appear to be strong but they are usually sensitive (敏感的) and shy. The more they curl (蜷缩) up, the more worried they are. 2. Log position (树干睡姿) – This is the second most common position. People who sleep like a log are usually stubborn. 3. Yearner position (向往型睡姿) – This position says that you are open-minded and eager (急切的) to face challenges. 4. Soldier position – These sleepers lie on their backs with their arms down and close to the body. They are usually reserved and quiet. 5. Freefall position – People who sleep in this position are outgoing (外向的) but feel a lack of control in their lives. This is the least comfortable position. 6. Starfish position – People who sleep like this are good listeners, helpful, and uncomfortable being the center of attention. 小题1:What is the main idea of this passage? A.Sleeping position decides personality. B.Sleeping position reflects personality. C.What the six different sleeping positions are like. D.Different people have different sleeping positions. 小题2:Which of the following pictures shows “soldier position”? A. B. C. D. 小题3:According to the passage, which of the following statements is correct? A.Those sleeping in fetus position are always strong. B.Those sleeping in log position changes their ideas easily. C.Those sleeping in freefall position usually feel uncomfortable in their lives. D.Those sleeping in starfish position may feel uneasy when focused on. 小题4:What does the underlined word “participants” in paragraph 3 most probably mean? A.Fetus B.British people C.People surveyed D.Sleepers
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【多选题】下列有关应力松弛现象的描述,正确的是(    )。
A.
在温度和形变保持不变的情况下,高聚物内部的应力随时间增加而逐渐衰减的现象
B.
交联聚合物的应力可以松弛到零
C.
线形聚合物的应力可以松弛到零
D.
在远低于T g 的温度下,应力松弛很慢
E.
聚合物的刚性越大,应力松弛越慢
【单选题】有关应力松驰现象的描述,正确的是( )。
A.
在温度和形变保持不变的情况下,高聚物内部的应力随时间增加而逐渐衰减的现象
B.
交联聚合物的应力可以松弛到零
C.
线形聚合物的应力可以松弛到零
D.
在远低于Tg的温度下,应力松弛很慢
E.
聚合物的刚性越大,应力松弛越慢
【判断题】应力松弛是指在恒定温度和形变保持不变的情况下,聚合物内部的应力随时间增加而逐渐衰减的现象。( )
A.
正确
B.
错误
【判断题】现在银行已经不使用单式收付记账法了。(    )
A.
正确
B.
错误
【单选题】下列有关应力松弛现象的描述,不正确的是()
A.
在温度和形变保持不变的情况下,高聚物内部的应力随时间增加而逐渐衰减的现象;
B.
交联聚合物的应力可以松弛到零;
C.
线形聚合物的应力可以松弛到零;
D.
在远低于Tg的温度下,应力松弛很慢;
E.
聚合物的刚性越大,应力松弛越慢。
【简答题】广告受众的心理活动过程,一般包括()、()、()
【单选题】应力松弛现象是指( )。
A.
保持构造应力(大于屈服应力)不变,应变随着时间的增加而增大。
B.
保持应变不变,构造应力随着时间增加而减小。
C.
材料变形过程中,具有时间效应的现象。
D.
加载或卸载应力时,弹性应变滞后于应力的现象。
【多选题】下列有关应力松弛现象的描述,正确的是
A.
交联聚合物的应力可以松弛到零
B.
在温度和形变保持不变的情况下,高聚物内部的应力随时间增加而逐渐衰减的现象
C.
线形聚合物的应力可以松弛到零
D.
聚合物的刚性越大,应力松弛越慢
【简答题】是应力不变,变形随时间而增加的现象。 是应变恒定不变,应力随时间减小的现象。
【单选题】固体材料在保持应力不变的条件下,应变随时间延长而增加的现象是
A.
可塑性
B.
触变性
C.
塑性变形
D.
蠕变
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