Chemical knowledge is closely related to life. Please fill in the blanks with the numerical serial number of the following substances. ① Acetic acid (CH3COOH) ② Soda ash

Life will continue

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Chemical knowledge is closely related to life. Please fill in the blanks with the numerical serial number of the following substances.

① Acetic acid (CH3COOH) ② Soda ash ③ Urea [CO (NH2) 2] ④ Activated carbon ⑤ Salt ⑥ Vitamin C

(1) "Alkali" added in homemade steamed bread _______ (2) Remove the scale in the aluminum pot_______

(3) Common seasonings such as marinated fish _______ (4) Remove refrigerator odor_______

(5) Substances that can be supplemented by regular eating of vegetables and fruits _______ (6) Common nitrogen fertilizer with the highest nitrogen content_______

Best answer:

②①⑤④⑥③

Answer analysis:

There is no explanation for this question

Test core:

Nutrients needed by human beings: In order to maintain life and health, human beings must take food. The ingredients of food mainly include protein, sugar, oil, vitamin, inorganic salt and water, which are generally called the six basic nutrients.

Recuperate the old body 2024-06-22 12:56:12

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Five common usages and examples of ellipsis

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Five common uses of ellipsis and examples:
The first kind: it means that the speech is intermittent. For example, she stumbled and said that she could not express a sentence fluently and completely.
The second is to indicate the omission of enumeration. Generally, the ellipsis is used after enumerating multiple items so that the reader can associate the omitted content. For example, the above one has everything, including rice chicken, horned chicken, Bo Gu, etc.
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The author of Top is Gao Hongbo. Gao Hongbo, male, pseudonym Xiang Chuan, poet and essayist, was born in Inner Mongolia in December 1951. He graduated from the Chinese Department of Peking University in 1988. In 1969, he was enlisted and served as a soldier and platoon leader of the artillery regiment of the 40th Army Division. He began to publish works in 1971. He joined the Chinese Writers Association in 1984. After transferring to work in 1978, he successively served as the Deputy Director of the News Department of the Literary and Art Daily, the Deputy Director of the General Office of the Chinese Writers Association, the Deputy Chief Editor of the Chinese Writers, the Chief Editor of the Poetry Journal, the Director of the Founding Association Department and Secretary of the Secretariat of the Chinese Writers Association. Member of the 9th National Committee of the Chinese Writers Association. Vice Chairman of the Chinese Writers Association.
Gao Hongbo, member of the 12th CPPCC National Committee, director of the Children's Literature Committee of the Chinese Writers' Association. He used to be a member of the Party Leadership Group of the Chinese Writers' Association, secretary of the Secretariat, chairman of the Chinese Literature Foundation, editor in chief of the Poetry Journal, etc. His representative works include the collection of essays "Whispers", poetry "I want", "Gao Hongbo Collection of Essays" (eight volumes) and "Gao Hongbo Collection of Essays" (nine volumes). His works have won the Chinese Publishing Government Award, the National Outstanding Children's Literature Award, the "Five Ones" Project Award, the National Book Award, etc. The cumulative sales of picture books "Happy Piglet Bobofei Series" have exceeded one million copies, and the copyright has been exported to France South Korea, Vietnam and other countries.

What does "buy" and "sell" mean

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The pinyin of "buy" is d í, which is a comprehending word. From entering to buying rice, it means buying rice, which is extended to buying rice. The pinyin for "attribute" is ti à o. The original meaning is to sell rice, which means to sell by extension. The combination of "buy and sell" means buying and selling grain.
example sentence:
1. Buy:
(1) So that no merchants can buy and no farmers can sell—— Book of Lord Shang · Reclamation Order
(2) You come to buy rice. Give me the silver to weigh—— "Selling Rice in Chenzhou"
(3) Buy rice without using money—— Hakka proverbs are commonly used.
2. Properties:
(1) The price has been sold for thousands of hours—— Records of the Historian: Biography of the Goods Colony
(2) So that no merchants can buy and no farmers can sell—— Book of Lord Shang · Reclamation Order
(3) New silk is sold in February, and new grain is sold in May—— Tang Nie Yizhong's Ode to the Tian Family
(4) The woman who wrote the wind and moon is like a hungry wolf—— Yongxi Yuefu

How many people have expressed their thoughts and feelings during the war in ancient times

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In ancient times, several people in the war expressed the author's open-minded and forthright thoughts and feelings. A man should act freely and look at death as if he were going home. This sentence comes from Liang Zhou Ci written by Wang Han, a poet of Tang Dynasty: "If you want to drink wine in a luminous cup, you should urge immediately. Don't laugh when you are drunk on the battlefield. You have fought for several people back in ancient times."
The mellow grape wine on the feast was filled in the luminous cup. Just as he was about to drink, the pipa sounded as if urging people to go to war. If you are drunk on the battlefield, please don't laugh. How many people who have gone out to fight in ancient times can return home?
Appreciation: The ancient poem describes a rare gathering banquet for the frontier officers and men, which shows a passionate and excited mood and a scene of drinking happily and getting drunk. It is a portrayal of the desolate border environment and the tense and turbulent military life, with a strong border color and the flavor of military camp life.

Chemical knowledge is closely related to life. Please fill in the blanks with the numerical serial number of the following substances. ① Acetic acid (CH3COOH) ② Soda ash

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