百度试题 结果1 题目( )4. What do the underlined words "UV rays" mean? D.超声波 A.沙尘 B.闪电 C.紫外线 相关知识点: 试题来源: 解析 1.C 反馈 收藏
What is the wavelength of ultraviolet rays of 3.0 \times 10^{15} Hz frequency? What is the wavelength of ultraviolet light whose frequency is 5.57 x 10^15 Hz? ___ nm What is the wavelength of light of frequency 100 Hz? What is the frequency of a...
It’s important to find ways to protect your skin from exposure to UVA rays. Always look for the words ‘broad-spectrum’ on your sunscreen label for a sunscreen that protects you from UVA and UVB rays. UVA rays can go right through glass and clouds. A UV window film is one method...
What do the underlined words UV rays' mean? 根据您输入的内容,为您匹配到题目: **What do the underlined words UV rays' mean?** A. 沙尘 B. 闪电 C. 紫外线 D. 超声波 **答案**: <> C 紫外线 ©2024 Baidu |由 百度智能云 提供计算服务 | 使用百度前必读 | 文库协议 | 网站地图 | ...
You should already know that the best way to protect your eyes from the sun’s damaging ultraviolet (UV) rays is to wear sunglasses when outside, but just how much UV protection do you need? The answer lies within the numbered rating, and the highest UV protection rating offered is UV ...
What is the frequency of gamma rays? What is a gamma ray burst? How are gamma rays detected? What's the difference between x-rays and gamma rays Are gamma rays alpha radiation? How do gamma rays interact with matter? Why are gamma rays dangerous?
F项“Protecting yourself from the sun’s UV rays should be a lifelong habit”(保护自己免受太阳紫外线的伤害应该是一个终生的习惯)照应前文,说明防晒无关年龄,“a lifelong habit”照应前文“no matter what your age is”,衔接恰当。故选F项。 (2)题详解: 上文“While the best sunscreen is one ...
What do the underlined words "UV rays" mean?5个回答 什么带下划线的单词“紫外线”是什么意思?2013-05-23 12:21:38 回答:匿名 什么在下面划线的词“紫外光芒”手段?2013-05-23 12:23:18 回答:匿名 什么在下面划线的词“紫外光芒”手段? 2013-05-23 12:24:58 回答:匿名...
Ultraviolet (UV) radiation is defined as that portion of the electromagnetic spectrum between X-rays and visible light or between 40 and 400 nanometer (nm) wavelengths. The primary source of UV radiation is the sun. There are also a number of artificial sources, such as tanning booths and ha...
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