How heavy are hummingbirds

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Hummingbirds generally weigh about 20g. They are small and can hover in the air by flapping their wings quickly (15 to 80 times per second, depending on the size of the bird). They are also the only birds that can fly backward.

Hummingbirds have superb flying skills, and are also known as "divine birds", "comets", "forest goddess" and "corolla". The honey sucking hummingbird (scientific name: Mellisugahelenae) weighs only 1.8 grams. There is also a typical North American hummingbird, the red throated northern hummingbird (scientific name: Archilochusclubris), which weighs about three grams and is 7.6 centimeters long. The largest hummingbird is the giant hummingbird (scientific name: Patagonagigas), whose weight is only 20g.

Why go far without dreams 2024-06-24 13:39:22

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1. Most people are the same and like only the face of love. 2. Falling in love with you is the only reason why I become humble. 3. An experience, if it doesn't give you what you want, at least it teaches you what you don't want. 4. In the future, will you think of the time you owe me if you make her love long. 5. The past has

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Should we pay liquidated damages for voluntary resignation

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Whether to pay liquidated damages for voluntary resignation If the employer provides special training fees for the employee during the probation period, the employee needs to pay liquidated damages for voluntary resignation; If the employer and the employee can agree in the labor contract to keep the employer's trade secrets and intellectual property rights, the employee who discloses after resignation needs to pay the violation

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Why is the tomb of Shen Wansan, the richest man in the Ming Dynasty, in the sea

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How to clean elastic cloth boots

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What is the Spring and Autumn Zodiac

Yangtze River and Yellow River

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What is the implied meaning of the Duke of Zhou, neither Confucius nor Duke of Zhou

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The implication of "Duke Zhou is not like Confucius, and Confucius is not like Duke Zhou" is that my father did not imitate Duke Yuan, nor did Duke Yuan imitate my father. They not only take care of each other's dignity, but also preserve their own dignity. They are neither humble nor overbearing.
From "Chen Yuanfang Waiting for Duke Yuan": "Duke Zhou and Confucius have come into a different world. They are moving around and quiet. They are like a million miles. Duke Zhou is not like Confucius, and Confucius is not like Duke Zhou."
Duke Zhou and Confucius were born in different times. Although they are far apart, their actions are so consistent. Duke Zhou did not imitate Confucius, nor did Confucius.
Chen Yuanfang was quick witted and resourceful. "Duke of Zhou and Confucius came out of a different world, moving around and still, and making thousands of miles as one. Duke of Zhou did not follow Confucius, and Confucius did not follow Duke of Zhou." Such a clever answer not only took care of the dignity of the other party, but also kept his own dignity. He was neither humble nor overbearing, and was generous, neither harming others nor harming himself. Duke Yuan would also nod his head in surprise.
In Shi Shuo Xin Yu, there are eight articles that directly introduce Chen Yuanfang's words and deeds, which are distributed in six sections, namely, Virtue, Speech, Political Affairs, Founder, Gui Zhen, and Su Hui.

What rule is used to judge the direction of magnetic field generated by current

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Use ampere rule to judge the direction of magnetic field generated by current. The ampere rule, also known as the right-hand spiral rule, is the rule that represents the relationship between the current and the direction of the magnetic induction line of the current excited magnetic field. The ampere rule (ampere rule 1) in the electrified straight wire: hold the electrified straight wire with your right hand, let your thumb point to the N-pole of the electrified solenoid, then the four fingers point to the direction of the current; Ampere rule in the energized solenoid (Ampere rule 2): Hold the energized solenoid with your right hand, let the four fingers point in the direction of current, then the end of the thumb is the N pole of the energized solenoid.
In science, the electric quantity passing through any cross section of conductor in unit time is called current intensity, which is called current for short. The current symbol is I, and the unit is ampere (A), which is called "ampere" for short (Andre Marie ampere, French physicist and chemist from 1775 to 1836, made outstanding achievements in the research of electromagnetic function, and also contributed to mathematics and physics. The SI unit of current, the ampere, is named after its surname).

Sima Guang's cylinder smashing is the text of which grade

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The text "Sima Guang smashes the vat" is a text for grade one in the elementary school People's Education Press.
The content of Sima Guang smashes the vat is:
Once, Sima Guang was playing with his friends in the backyard. A child climbed onto the big vat and fell into the water in the vat. As soon as other children saw that something had happened, they abandoned him and ran away. But Sima Guang was quick and quick. He picked up a big stone from the ground and hit it hard at the water tank. The water gushed out and the child was saved.
Sima Guang was born in the third year of Tianxi, Emperor Zhenzong of Song Dynasty (November 17, 1019 AD). At that time, his father Sima Chi was serving as the magistrate of Guangshan County, Guangzhou, so he was named "Guang". Sima Guang's family has been an official for generations, and his father Sima Chi later went to the military department doctor and Tianzhang Pavilion to be made, and has always enjoyed a reputation for honesty and kindness.
Sima Guang was born in Xiaxian County, Shaanxi Province. His father's name is Sima Chi, and Sima Guang, the official name of Ren Tianzhang Pavilion (Song Dynasty), was deeply influenced by his father, and he was smart and eager to learn from an early age.
According to historical records, Sima Guang liked to read Zuo Zhuan very much, and often "couldn't put it down until he was hungry, thirsty, cold and hot". At the age of seven, he was able to recite Zuo Zhuan skillfully, and he was able to tell the historical sketch of more than 200 years clearly, which shows that he had a strong interest in history since he was young.

What does intuition mean

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Intuition is a Chinese word, and the pinyin is zh í ju é, meaning intuitive feeling; An opinion without analytical reasoning. Lu Xun's Lace Literature - Accounting: "But I feel intuitively that this is probably a cost reduction, which is much more harmful than using the Boxer Indemnity to cultivate a few limited scholars."
Intuition refers to a special way of thinking that is not controlled by human will. It is a form of thinking based on the existence of human occupation, experience, knowledge and instinct.
Sentence making:
1. Real intuition comes from your insight into different things. Make sentences clearly.
2. He seems to know what to do by intuition.
3. Real intuition comes from your insight into different things.
4. My intuition told me that I must win the prize, which was just as expected.
5. You should trust your intuition and don't disagree, otherwise you can't decide anything at that time.

How heavy are hummingbirds

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