凹透镜、凸透镜、凹面镜、凸面镜和平面镜，都是常用的光学器材．_爱下问搜题

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问题填空题

凹透镜、凸透镜、凹面镜、凸面镜和平面镜，都是常用的光学器材．近视眼睛的镜片是______镜，老花眼镜的镜片是______镜，教学投影器上的反射镜是______镜．

答案

近视眼是因为晶状体的会聚能力太强了，需要配带发散透镜即凹透镜；

远视眼是因为晶状体的会聚能力太弱了，需要配带会聚透镜即凸透镜；

教学投影仪上的平面镜是要利用光的反射来使像成在屏幕上．

故答案为：凹透；凸透；平面．

单项选择题 A1/A2型题

2岁小孩，双侧先天性髋关节脱位．最佳治疗方案可选（）

A.牵拉复位

B.手术切开复位

C.髋臼成形术

D.手法复位+蛙式石膏固定

E.连衣袜套

问答题

Binh is a young trainee who works for the customer service team in the Relax Hotel. While helping Sell Limited, a corporate client, to set up a meeting room for a conference, she accidentally dropped expensive equipment belonging to the client, causing irreparable damage. As a result, the client could not deliver the presentation as scheduled, causing considerable embarrassment.Sell Limited claimed that its reputation has suffered, as the audience included several valuable customers. In addition, it had to replace the equipment at a cost of 150 million dong.Required:Discuss the obligations of Binh and the Relax Hotel for the losses suffered by the client. (10 marks)