SOS！！Please prawn first aid!!

Usually try not to install the software on the C drive when you install it, it will make the computer slow to respond.

The C drive is a system disk, and you are likely to clean up some very important programs when you are cleaning up the disk.

It is recommended to back up important files to other disks and redo the system.

The current ghost installation can be done in 10 minutes.

Go to the computer city and buy a ghost and you can install it quickly.

Then reinstall the software you're using and you're fine.

It's the quickest and easiest way to do it.

I have to admire you. The software you mentioned, during the installation process, is to generate registry files, when you defragment the C disk disk, the system will delete those precipitated registry files by default, that is, the registry information of your files! **After reinstalling, don't install it on the C drive, if it doesn't work, you can only reinstall the system If you have a backup and restore, it's best.

Install all these software, and then use the 360 or QQ software manager to completely uninstall it, and clean the residual files, and then restart, install them again, and the problem should be solved. I wish you a speedy solution to this problem, humble opinion, FYI!

Pour out all the system files of the C drive, and then format the C drive, and then reinstall QQLivy, etc.

Have you tested the bad sectors of the hard disk?

It is recommended to test it first.

If there are no bad sectors.

It is recommended to try it out in full formatting.

Use Optimizer to optimize your C drive, delete the registry inside, and reinstall it.

It stands to reason that disk cleanup shouldn't be! It is recommended that you install a new system!

Question 1,:1. Weigh the mass of the large beaker as m1,2. Put the small beaker into the large beaker, and put the metal block into the small beaker with a rope, and completely submerge it.

3。Remove the small beaker and weigh the large beaker mass m2,4. The water mass is m2-m1 grams, i.e. the volume of the metal block is m2-m1 cubic centimeters.

Question 2:1. Pour an appropriate amount of water into a beaker (you can completely submerge the eggs),2.

Draw the outside of the beaker with a color contrast line so that it is as flat as the water in it, put in the eggs, and mark 3 in the beaker. Remove the eggs and add water to the beaker so that the amount of water is as high as the thread of the second flower, 4. Slowly pour out the water from the beaker to the scaling cylinder so that it is just as high as the thread of the first flower, making a stop5.

The volume of the egg is read out of the graduated cylinder data.

The drainage method uses the volume of water discharged when an object is submerged in water to be equal to the volume of the object. Got it?

1. Put the small cup into the big cup, and then put the metal into the small cup, and the water will overflow, then take out the small cup, weigh the mass of the large cup with the water (weigh the mass of the large cup alone before the test starts), and then subtract it to get the mass of the water, and the volume can be calculated according to the density, which is the volume of the metal.

2. Put a certain amount of water in the beaker first, mark the water level 1 with a color pen, put in the eggs, and then mark the new water level 2, pay attention to the water must be submerged in the eggs, take out the eggs, and then add water to the beaker, add until the water level 2, and then pour the water into the graduated cylinder All the way to the place where the water level 1 is at this time, the volume of water in the graduated cylinder is the volume of eggs.

9. (1) Cylindrical, white, odorless and soft.

2) White, warmer, odorless, shorter.

3) A puff of white smoke.

4) Turned into carbon dioxide.

5. Ear hearing, nose smelling, hand touch: weight, size, state.

6. Generate static electricity and repel each other The plastic filaments are cocked to all sides Because static electricity is generated with dry hands, it will flutter with the movement of the hands. The lower end of the plastic filament will be slightly upturned. Like flying.

This is because dry hands are brushing back and forth. Static electricity is generated in the plastic filaments. There are two types of static electricity.

One is called negative charge. The other is called positive charge. If it's two of the same charge.

The filaments will repel each other. So it will fly up the same.

No way! So many questions!! Oh, my God!! Your teachers are ruthless! My teacher was also ruthless.

Of course, you only have one chance. I will definitely regret it in the future, be bold, maybe he loves you!!