承重脚手架：原规定脚手架上的施工负载不得超过2700N／m2，但近_爱下问搜题

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问题单项选择题

承重脚手架：原规定脚手架上的施工负载不得超过2700N／m2，但近年来在作了大量调查研究和通过计算及实验：最后在脚手架安全技术规范中确定为（）N/m2

A、2700

B、2800

C、3000

D、3200

答案

参考答案：C

完形填空

任务型阅读 (共10小题; 每小题l分, 满分l0分)
Most people feel lonely sometimes, but it usually only lasts between a few minutes and a few hours.
This kind of loneliness is not serious. In fact, it is quite normal. For some people, though, loneliness can last for years. Now researchers say there are three different types of loneliness.
The first kind of loneliness is temporary. This is the most common type. It usually disappears quickly
and does not require any special attention. The second kind, situation—for example, family problem, the death of a loved one, or moving to a new place. Although this kind of loneliness can cause physical problems, such as headaches and sleeplessness, it usually does not last for more than a year.
The third kind of loneliness is the most severe. Unlike the second type, chronic（the opposite of
“temporary”）usually lasts more than two years and has no specific cause. People who experience habitual loneliness have problems socializing and becoming close to others. Unfortunately, many chronically lonely people think there is little or nothing they can do to improve their condition.
Psychologists agree that one important factor in loneliness is a person’s social contacts, for example,
friends, family members, co-workers, etc. we depend on various people for different reasons. For instance, our families give us emotional support, our parents and teachers give us guidance, and our friends share similar interests and activities. However, psychologists have found that, though lonely people may have many social contacts, they sometimes feel they should have more. They question their popularity.
Psychologists are trying to find ways to help habitually lonely people for two reasons: they are unhappy and unable to socialize and there is a connection between chronic loneliness and serious illness as heart disease, while temporary and situational loneliness can be a sad, and sometimes dangerous condition.
Loneliness and Diseases

Three different types of _81_	The most common type is 82 . It disappears quickly and 83 no special attention.
	The second type is situation, which usually lasts for 84 than a year.
	The third kind is chronic, which means if people experience habitual loneliness, they’ll have problems 85 with others
An important factor in loneliness	With the help of 86 , we know a person’s social contact is one important factor.
	We depend on a wide 87 of people for different reasons. For instance, our families give us emotional support.
	Lonely people may have many social 88 , but they sometimes feel they should have more.
The reasons for finding ways to help the lonely people	One is that they are unhappy and unable to socialize.
The reasons for finding ways to help the lonely people	The 89 reason is that temporary and situational loneliness can be a 90 condition, sometimes dangerous too.

单项选择题 A型题

某患者，眼位异常，检查情况如图，考虑为哪一种神经麻痹（）

A.视神经

B.动眼神经

C.滑车神经

D.三叉神经

E.外展神经