Too much sun can also cause painful sunburns.There are three different types of UV energy waves. They are UV-A, UV- B and UV- C rays. Each type moves at a different wavelength, with UV-A’s being the longest. Rays of UV- C are considered especially harmful to human beings. ...
What do the underlined words “UV rays” mean?A.沙尘B . 闪电C.紫外线D. 超声波 相关知识点: 试题来源: 解析 C UV是Ultraviolet的缩写,意为紫外线。A选项沙尘与光线无关;B选项闪电属于天气现象;D选项超声波为声波,而UV rays属于电磁波中的紫外线,因此正确选项为C。
There are three different types of UV energy waves. They are UV-A, UV-B and UV-C rays. Each type moves at a different wavelength, with UV-A’s being the longest. Rays of UV-C are considered especially harmful to human beings. Fortunately, we have the ozone (臭氧) layer of the Ear...
根据文章首句Sunscreens (防晒霜) can offer protection from two types of ultraviolet (UV) rays (紫外线): UVB, which according to the Skin Cancer Foundation, are the chief cause of sunburn and play a key role in the development of skin cancer, and UVA, which get through the skin more ...
Two different UV-disinfection units were tested. Both consist of cylindrical shaped chambers with one low-pressure mercury-discharge lamp with their longitudinal axis parallel to the chambers. With 10(6) cfu/ml the experiments were done with three different rates of flow of 7,2 m3/h, 4,0 ...
What do the under words “UV rays” mean? A. 沙土 B. 闪电 C. 紫外线 D. 超声波 相关知识点: 试题来源: 解析 To have a face-to-face interview with Jeff Smith, you can get there ___. A. at 8:45 a.m. on Sunday B. at 5:00 p.m. on Saturday C. at 9:15 a.m. on Mo...
故选B。 根据本段中When a heroin addict receives naxolone, the drug can set off withdrawal symptoms within minutes. In the UV-treated mice, the drug seemed to block the feel-good effects of UV exposure.可知,naxolone似乎可以阻断紫外线照射带来的那种良好感觉。故选D。 反馈 收藏 ...
UVA rays have a lower amount of energy and a longer wavelength than UVB rays. They can enter the middle layer of your skin called the dermis. UVA rays form 95% of the UV radiation which reaches the earth. They have a role to play in the formation of some types ofskin cancers. ...
(redirected fromUV radiation) Thesaurus Medical Encyclopedia ThesaurusAntonymsRelated WordsSynonymsLegend: Switch tonew thesaurus Noun1. ultraviolet light- radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays ...
Types of microbial decontamination According to the Environmental Protection Agency (EPA), there are three categories of microbial treatments based on the level of effectiveness of decontamination; sanitizers, disinfectants, and sterilants (EPA). Sanitizing is considered the least effective decontamination ...