问题 多项选择题

病历摘要:一健康的七岁儿童从约二米高树上跌下,右手掌着地,即感右肘部疼痛难忍,继之出现肘部肿胀及功能障碍。二小时后由家人陪送来急诊。

按损伤外因属何种外力?

A.直接暴力 

B.间接暴力 

C.传导(达)暴力 

D.扭转暴力 

E.劳损力 

F.杆杠力 

答案

参考答案:B, C, F

解析:

损伤病因中外因中外力的因素是主要的。按外力的性质分析,伤儿是从高处跌下,且右手掌着地反作用力向上传导至肱骨下端之髁上薄弱点,造成骨的破坏发生了骨折。骨折部位髁上远离力的作用处,所以是间接暴力中的传导力引起的。力的直接作用处是手掌,而它没有骨折,因此直接力引起是错误的。在骨折发生过程中无旋转力存在,所以也非扭转力引起。损伤的发生是突然跌倒引起,所以不是慢性劳损所致。但从骨折发生的机制用力学分析手掌着地产生力点,自上而下的躯干重力产生重点,力的传导至肱骨髁上则是二力交接处作为支点,符合力学杆杠原理,故属杆杠作用力。 

阅读理解

The following card includes a brief summary and a short assessment of a research paper. It can provide a guide for further reading on the topic.

Trevor, C. O., Lansford, B. and Black, J. W., 2004, "Employeeturnover (人事变更) and job performance: monitoring the influences of salary growth and promotion", Journal of Armchair Psychology, vol. 113, no.1, pp. 56-64.

In this article Trevor et al. review the influences of pay and job opportunities in respect of job performance, turnover rates and employees' job attitude. The authors use data gained through organizational surveys of blue-chip companies in Vancouver, Canada to try to identify the main cause of employee turnover and whether it is linked to salary growth. Their research focuses on assessing a range of pay structures such as pay for performance and organizational reward plans. The article is useful as Trevor et al. suggest that there are numerous reasons for employee turnover and a variety of differences in employees' job attitude and performance. The main limitation of the article is that the survey sample was restricted to mid-level management, thus the authors indicate that further, more extensive research needs to be undertaken to develop a more in-depth understanding of employee turnover and job performance. As this article was published in a professional journal, the findings can be considered reliable. It will be useful additional information for the research on pay structures.

1. The research paper published is primarily concerned with    

A. the way of preventing employee turnover

B. methods of improving employee performance

C. factors affecting employee turnover and performance

D. pay structures based on employee performance

2. As is mentioned in the card, the limitation of the research paper mainly lies in that      .

A. the data analysis is hardly reliable

B. the research sample is not wide enough

C. the findings are of no practical value

D. the research method is out-of-date

3. Who might be most interested in this piece of information?

A. Job hunters.

B. Employees in blue-chip companies.

C. Mid-level managers.

D. Researchers on employee turnover.

判断题