上面,for为了,表示目的,symbol后接of sth,表示象征;后接for sth.表示符号,记号,根据the chemical symbol...water可知,此处指的是"水的化学符号"。故选:D。 【思路点拨】水的化学符号是什么? 【点评】本题考查介词的用法,在熟知所供词的含义基础上,根据句意,从而判断出正确答案。
百度试题 结果1 题目1. What is the chemical (化学)_ symbol_(符 ) of water? 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
Chemicals such as chlorine have been used to treat our drinking water for more than a hundred years. Today, chemical disinfection is considered the essential and most direct way to inactivate or destroy pathogenic and other microbes in drinking water. However, it is equally important to ensure ...
Corrosion inhibitor is another kind of water treatment chemical. Corrosion is a general term that refers to the conversion of metals into soluble compounds. Corrosion can cause the failure of key components of the boiler system, the deposition of corrosion products in key heat exchange areas, and...
What is the chemical compound of water? How does it differ from other compounds?Water:Water is a unique polar molecule which shows the extraordinary ability to dissolve most other compounds and solutes. Due to this unique nature of water molecule, it is also known as universal...
一、 词汇运用1. What is the chemical (化学) symbol_ (符 ) of water?2. Come into (进入) the hous
What may chemical substances accumulate in? A. Water B. Air C. Soil D. Space 相关知识点: 试题来源: 解析 C。中文解析:“Some chemical substances may also accumulate in the soil and have a long-term impact on the ecological environment.”表明一些化学物质会在土壤中积累。
Water is composed of single oxygen covalently bonded to two hydrogen molecules. Water molecules form networks of molecules hydrogen-bonded to each other. Because of this, water has a relatively high boiling point. The water molecule is also highly polar....
(1)H2O:One day the science teacher asked the class,“What's the chemical formula for water?“A boy put up his hand, and the teacher said,”“Yes?”the boy said“HIJKLMNO”.“Are you trying to be funny?”asked the teacher angrily.“No, sir.”said the boy.“You said the formula ...
The explosion of chemical elements is a chemical reaction resulting from the need of certain elements to expel the single electron in their outer shells to reach a more stable state. However, the expulsion of the electron in water breaks the water molecule in order for the oxygen to bond ...