Ask whether a question is right or wrong

None of them are right: the reason:

1. Two objects of the same material and the same volume must have the same weight, and it is impossible to be heavy or light.

2. Two objects of the same material and the same weight must have the same volume, and it is impossible to be large or small.

3. Whether an object can float or sink is not at all whether the object is big or small or heavy or light. It depends on the size of the specific gravity of the object per unit volume of the liquid.

For example, people are easy to sink in water. Those who can swim can swim in the water with their skills, but those who can't swim are dangerous.

But this is not the case with the Dead Sea, which lies between Israel and Jordan. Salt-rich water keeps people from sinking and unable to swim. If you put one arm in the water, the other arm or leg will float.

If you want to immerse yourself in water, you should gradually tilt your back until you are lying flat. In the Dead Sea, there will be no more water and no drowning. The reason for this lies in the specific gravity of the object and the liquid per unit volume.

In the former, the specific gravity of a person per unit volume is larger than that of water, and it sinks. The latter, due to the high salt content of seawater, the specific gravity per unit volume of people is smaller than that of water, and it rises.

I think this example will help you understand the reasoning.

It's all wrong, you can think about it, you take 2 pieces of iron paper that meet in volume and quality, one of them is long into a bowl, and the other is rolled into a solid strip, of course, the results are different, and the second topic can also be proved in this way.

2 pairs, buoyancy f = density of liquid * volume of discharged liquid.

Change to read the answers.

1. The order of this article has been disrupted, please write the correct order of grinding wisdom on the horizontal line below according to the serial number. (2 points).

Answer: 42318675

2. The pair of words that highlight Mayor Ma's "change" in the text are and. (2 points).

Answer: Leisurely and suddenly convergent.

3. The purpose of the daughter's "consultation" from her father in the text is (2 points).

Answer: By indirectly asking the father whether he is in favor of going to the countryside to engage in a blind and grinding township enterprise, the father can be asked to promise his daughter.

4. The meaning of "such" in the first sentence of the text is (2 points).

Answer: 1refers to the daughter to go to the countryside to engage in township enterprises 2is to blame his daughter for deceiving him through this means and asking him to support his daughter to go to the countryside.

5. What kind of person do you think Mayor Ma is in the article? (2 points of wandering).

Answer: Although Mayor Ma knew that it was an honorable thing for college students to go to the countryside, he objected when he learned that his daughter was going to the countryside, and from the father's point of view, a father was afraid that his daughter would suffer hardship, so it was right to let his daughter live a good life, but from the daughter's side, he restricted his daughter's development. Not a competent father.

Who are the main characters in this short article. Mayor Ma's daughter didn't tell him directly what she was planning to do; What Mayor Ma's change illustrates.

Answer: The protagonist, Mayor Ma. Because I knew that my father would not agree.

What Mayor Ma's change illustrates. Human nature, I feel sorry for my daughter, and I can't bear to let my daughter suffer in a difficult environment, in this sense, Mayor Ma is also an ordinary father; At the same time, it also shows that people have two sides, it is easy to ask others, and it is difficult to ask for yourself.

Although this question was copied on the Internet, I have also done it. But this question is correct, and I hope it helps you.

Based on my experience as a language class representative over the years, this question is correct. biu～

Wrong you hit me

From the method and sentence of this question, there is no problem with it! It should be right.

Correct 1 m 100 cm.

100-50 50 cm.

So that's right.

Interest, dividends, bonuses, incidental income.

1) Levy method: levy on a per-time basis.

Interpretation] The income obtained when paying interest, dividends, and bonuses is regarded as a one-time payment; Incidental income is calculated once per income.

2) Tax basis: the amount of each income is the taxable income.

Interpretation] Interest, dividends, bonuses, and incidental income are taxed on the basis of "original income", and there is no problem of deduction.

3) Tax rate: The basic tax rate is 20%.

4) Tax payable: 20% of each income

Interest, dividends, bonuses, and accidental income examples] Li spent 1,000 yuan to win a "Buick" brand car worth 300,000 yuan in a welfare lottery**, plus 500,000 yuan in cash. The personal income tax rate is 20%, and the individual income tax payable by Li is ( ) yuan.

Answer] D Analysis] Accidental income is calculated and levied on the basis of each income, and the calculation process is: (30+50) 20% 160,000 yuan.

That's right.

Wrong. The results changed after the parentheses were added.

You don't write it clearly, this f(x0) is the original function or the new function, if it is a new function it is wrong, if it is the original function is right.

Reason: The derivative must be continuous, the continuous must have a limit and the limit value is equal to the value of the function, note that this is the value of the function and not the derivative value, and y x represents differentiability at x0, and this value is f'(x0) represents the derivative value of the x0 point instead of the function value, if the new function value = the original function value is true, otherwise it is wrong.

How to calculate this problem, I remember it in college math before.