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Anonymous users2024-02-10The battle for space is not only a matter of resources, but also a matter of a country's strategic security. If other people's satellites take pictures of our land every day and we don't know anything about them, what kind of security research is there? The development of space technology also determines the level of communications of a country.
Today's long-range missiles all need to have a global positioning system, which is inseparable from space technology. In addition, the exploration of space is an important part of the third scientific and technological revolution and represents the direction of future scientific development.
The controversy over the seas began after the opening of new shipping routes, and it cannot be said that it is the direction of the future contention. It has always been an important part of the country's development. Britain became an empire on which the sun never set with its powerful navy, and the precursor to the United States' global hegemony was that the United States began to sit on an equal footing with Britain in naval construction after World War I.
Once a country decides to vigorously develop its navy, it means that the country has to expand its strategic interests to a farther place, which will cause unease in other countries. So both China and Japan are focusing on space development for the time being. Japan is restricted by the international community, and China is afraid of causing unease in other countries and worsening the security environment.
Which one to develop first is a complex strategic question. It is not something that can be solved by economic interests alone.
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Anonymous users2024-02-09Economic development from the moon will not be achieved in the short term (20 40 years), agreed.
Should solar replace existing conventional energy sources? It's too early to ......
Since the limited use of solar energy cannot be solved in the short term, the use of hydrogen ...... in seawater can be considered
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Anonymous users2024-02-08Economic development from the moon will not be realized in the short term.
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Anonymous users2024-02-07Advance development fainting I should answer twice but I can't show the word "hair", only the hair has a traditional ......
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Anonymous users2024-02-06No Traditional unless you want Martian.
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Anonymous users2024-02-05Gather? This is the easier part of high school. I don't agree with any high or low IQ.
Einstein had to learn no matter how smart he was. Calm down and study the collection. Combined with real life, this is still relatively simple.
It's not an IQ issue at all. Gab..
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Anonymous users2024-02-04How about doing the questions, let me say how simple the collection is, sell this workbook and do it yourself, and I won't ask the teacher to see the answer.
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Anonymous users2024-02-03No, what is the adaptation period for high school study, some people have a long time, and some people have a very short time. I was just a sophomore in high school, at the beginning of high school, mathematics 150 can only do a 110 more, my classmates are better than me, and the teacher can't understand what the teacher says, but after 1 month, I slowly adapted, and my academic performance will be improved.
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Anonymous users2024-02-02First, the capacitance compensation you mentioned is ahead, which can be understood as the capacitance compensation capacity is too large, resulting in overcompensation!
Second, it can be understood in another way, your power factor meter is connected to the capacitance compensation, which must be ahead!
Generally speaking, the second case is the result of a misunderstanding and does not exist.
When there is the first situation, you should take a good look at the changes in active and reactive power before and after the compensation! Determine whether the under-compensation will affect the power factor below the power supply requirements.
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Anonymous users2024-02-01If it was normal before the cabinet was moved, did it appear after it was moved? In the process of moving, you must have dismantled the current and voltage sampling line, it is very likely that when recovering, the sampling line of the reactive power compensation controller is reversed, carefully check the instrument, especially the two lines of current sampling, the current direction is reversed, it will cause the display to be ahead, in fact, that is the actual power factor of the power grid.
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Anonymous users2024-01-31If the wiring is not changed, moving the electrical cabinet and cleaning the electrical cabinet dust will not cause this phenomenon.
As the saying goes, "When a son is born, a woman depends on the year of marriage." The principle of choosing the date of marriage is based on the date of birth of the bride, and with reference to the date of birth of the man and others, the recommended auspicious days for you are as follows: >>>More
You've learned a lot of musical instruments......Envy. And so on......You're all young this year!!I studied piano for 15 years !!Ah, little sister, I don't live as much time as you play the piano ...... >>>More
The sound of the train will definitely reach your home (if it is closer). The propagation of sound travels far, far away, theoretically infinitely. However, because sound waves have the characteristics of waves, there will be losses in the process of propagation, reflections when encountering obstacles, and so on. >>>More
I don't recommend this. It is not recommended to help each other in this case. The so-called borrowing money is not helping. >>>More
Because the chassis of your car is not heavy enough, there will be bumps on the gravel road, and if the chassis of the car is heavy, there will be no bumps on the gravel road.