钢丝绳的主要缺点是刚性（）不易弯曲。

[单选题]Passage2People often complained about not getting"a good night's sleep"，but sleep patterns differ from person to person. Most adults require six to eight hours of sleep to function well，while others survive on only a few hours. Still，most people today think of sleep as one continuous period of downtime. This is not the way people used to sleep. According to researchers in earlier times，people divided sleep by first sleep a few hours，waking up，then going back to sleep.Before the 18th century，people had no gas or electricity in their homes. Fire，candles，or oil lamps were the common forms of lighting. This lack of artificial lighting in homes contributed to people's sleep patterns. It made sense for people to go to bed early. If you live in this time period，you might be a hard-working farmer，and you would come home，eat and quickly fall into bed exhausted. You would probably go to sleep at 9：00 or 10：00 P.M. In this first period of sleep-called first sleep-you would typically sleep until midnight or shortly afterwards.Halfway through the night during a period some call the watch，or watching period. When you came out of first sleep，you would stay in bed and relax quietly. You might talk with a bedfellow，meditate on the day's events or the meaning of a dream，or just let your mind wander. If you enjoyed writing or drawing，you might get out of bed to write a poem or story or draw a picture.Then you would start to feel sleepy, so would return to bed and fall asleep again for your second sleep. This period would continue until early morning when daylight arrived. Again, with no artificial lighting in homes, people naturally woke up early to take advantage of sunlight.Today, human may consider divided sleep a strange habit, but sleep researchers say that it is actually a more natural sleep pattern. Dr. Thomas Wehr of the U.S. National Institute of Mental Health has studied human sleep. He thinks that modern sleep problems occur because the orderly, natural way of sleep is breaking through the more recent continuous sleep pattern. Wehr and other scientists believe that artificial lighting has altered the way people sleep. In a research study, he asked 15 adults to rest and sleep in darkness for 14 hours(from 6:00 P.M. to 8:00 A.M.). At first, the subjects took a few hours to get to sleep, and then slept 11 hours a night. Then overtime, they switched to divided sleep. They fell asleep for about 3 or 5 hours in the evening, stay awake for an hour of two and then slept again for four hours till early morning.Unlike the people in the study, we modern humans generally do not practice divided sleep. However, many of us have the experience of waking up in the middle of the night. We usually consider this a sleeping "problem", but perhaps we should look at it as natural behavior. Divided sleep may be the way we should all be sleeping. A first sleep followed by a relation period and a second period of sleep could help all of us to beat the stress of our fast-paced lives.Which of the following is NOT true according to the text?

[判断题]收集、调取的书证应当是原件。取得原件有困难的，可以是副本或者复制件。

[问答题]填列下表并编制2015年和2016年有关会计分录。　　注：（1）期初义务是归属于以前年度的设定受益义务的现值。　　（2）当期服务成本是归属于当年的设定受益义务的现值。　　（3）期末义务是归属于当年和以前年度的设定受益义务的现值。（本题答案中的金额单位用元表示）

[名词解释题]启发式

[多选题]共青团在军队中的组织必须把（）有机结合起来。实现政治坚定、组织健全、制度落实、活动经常、作用明显。

[多选题]药物代谢中的第Ⅰ相生物转化包括（）

[多选题]项目沟通的主要方法有（）

[名词解释题]国际货物买卖合同

[单选题]有关纬线和纬度的正确叙述是（）。

[单选题]证见低热，干咳，口舌干燥而渴，舌干红少苔，脉细。其病机为（　　）。

[单选题]钢丝绳的主要缺点是刚性（）不易弯曲。

[判断题]钢丝绳的缺点是刚性较大易弯曲。

[单选题]面接触钢丝绳的缺点是（）。

[单选题]面接触钢丝绳的缺点是（）。

[填空题]钢丝绳双绕绳按捻向绕制方法不同分为交互捻钢丝绳、（）钢丝绳、（）钢丝绳。

[填空题]钢丝绳双绕绳按捻向绕制方法不同分为交互捻钢丝绳、（）钢丝绳、（）钢丝绳。

[判断题]因为钢丝绳有可抻长性，所以对于钢丝绳带动的伸缩机构，当发现钢丝绳松了时，要对钢丝绳重新紧定。

[多选题]某电梯厂李、陈、柯三人在更换曳引钢丝绳时，用2吨手拉葫芦将轿厢吊起（起吊钢丝绳卡住了安全钳联动拉杆），然后拆除了全部曳引钢丝绳，当李、陈站在轿顶上不未将新钢丝绳...

[单选题]钢丝绳夹主要用于钢丝绳的连接和钢丝绳穿绕滑车组时绳端的固定，直径为18~26mm的钢丝绳绳端的固定选用的绳夹最少数量为（）。

[单选题]对于φ16㎜以下的钢丝绳，采用钢丝绳绳夹固定，被夹绳的长度不应少于钢丝绳15d，使用钢丝绳绳夹的数量不少于（）只。钢丝绳绳夹只允许将2根相同规格的钢丝绳夹在一起...