以下职业性危害因素：紫外线、红外线属于（）。

[单选题]Passage1The medical world is gradually realizing that the quality of the environment in hospitals may play a significant role in the process of recovery from illness.As part of a nationwide effort in Britain to bring art out of the galleries and into public places，some of the country's most talented artists have been called in to transform older hospitals and to soften the hard edges of modern buildings. Of the 2，500 National Health Service hospitals in Britain，almost 100 now have significant collections of contemporary art in corridors，waiting areas and treatment rooms.These recent initiatives owe a great deal to one artist，Peter Senior，who set up his studio at a Manchester hospital in northeastern England during the early 1970s.He felt the artist had lost his place in modern society，and that art should be enjoyed by a wider audience.A typical hospital waiting room might have as many as 500 visitors each week. What better place to hold regular exhibitions of art？Senior held the first exhibition of his own paintings in the out-patients waiting area of the Manchester Royal Hospital in 1975.Believed to be Britain's first hospital artist, Senior was so much in demand that he was soon joined by a team of six young art school graduates.The effect is striking. Now in the corridors and waiting rooms the visitor experiences a full view of fresh colors, playful images and restful courtyards.The quality of the environment may reduce the need for expensive drugs when a patient is recovering from an illness. A study has shown that patients who had a view onto a garden needed half the number of strong pain killers compared with patients who had no view at all or only a brick wall to look at.The fact that six young art school graduates joined Peter shows that_______.

[单选题]区域性地面沉降一般指下列原因引起的：（）

[判断题]治疗强心苷中毒的快速型心律失常首选药是苯妥英钠。

[单选题]灭头虱药液的成分是：（）

[多选题]（）都会引起蓄电池极板的短路。

[单选题]大肠津亏证的主症是（）。

[名词解释题]教学艺术的特点

[单选题]鲁迅先生所说“著此一家，即骂尽诸色”，指的是哪部作品（）

[单选题]秦朝三公九卿制中的〃三公〃，是指丞相、（）和太尉。

[单选题]在企业起飞期的后期，容易出现的危机是（）

伊拉克战争什么时间？(第一次伊拉克战争时间？)

电脑着火了应该怎么办?(电脑着火，怎么办？)

止血带的正确使用方法，止血带使用需要注意事项

安全生产知识技能培训-电气设备引起火灾的原因

[单选题]以下职业性危害因素：紫外线、红外线属于（）。

[问答题]频率小于1015Hz的红外线、微波等是靠什么杀菌，而频率大于1015的紫外线、X射线、γ射线是靠什么杀菌？

[问答题]在玻璃（ε r=2.25，μ r=1）上涂一种透明的介质膜以消除红外线（λ=0.75μ m）的反射。 ⑴求该介质膜应有的介电常量及厚度。 ⑵如紫外线（λ=0.4...

[判断题]红外线、紫外线都是电磁波，但两者的波长不同。

[单选题]对有红外线和紫外线及应用激光的场所应采取的措施不包括（）。

[判断题]氩弧焊时会产生强度较高的紫外线和红外线，因此焊接时应加强防护。

[判断题]焊接过程中的弧光辐射是由紫外线、可见光和红外线组成的。

[判断题]氩弧焊时会产生强度较高的紫外线和红外线，因此焊接时应加强防护。

[判断题]可见光按波长从长到短是：红外线、红、橙、黄、绿、青、蓝、紫、紫外线。

[单选题]在紫外线、红外线、X射线和无线电波中，产生衍射现象最明显的是（）