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List of contents of this article:

• 1,casino plus free 100 The best time for system color ultrasound examination
• 2 , How to check whether the computer system is normal
• 3, How to check whether the system is damaged
• 4, Teach you five steps to check the brake system by yourself
• 5, How to solve the problem of the startup recovery check system as soon as the computer is turned on?

The best time for systemic color ultrasound examination

1. The third color Doppler ultrasound time It can be carried out around 28-30 weeks of pregnancy. During this period, the subcutaneous fat of the fetus is relatively full, and the facial expression is also relatively rich.

2. Four-dimensional color ultrasound can be done after any 12 weeks of pregnancy, but it should be emphasized that early pregnancyPeriod) Before 12 weeks of pregnancy * Four-dimensional color ultrasound is currently controversial. For safety's sare, it is recommended to do fetal four-dimensional color ultrasound after 20 weeks of pregnancy. It's better not to exceed 28 weeks.

3. Four-dimensional color ultrasound should be carried out between 20/28 weeks of pregnancy, and the best time period should be between 22/26 weeks. Early detection of fetal malformations. On the one hand, four-dimensional color ultrasound can detect fetal limb development malformations and other surface deformities at an early stage.

How to check whether the computer system is normal

System problems If the computer has a system problem, you can try to press F8 to enter the safe mode or reinstall the system. Memory problem If the computer has a memory problem, you can unplug and insert the memory stick again and wipe the golden finger.

Because it may also be caused by too much system garbage. It is recommended to clean up each disk, especially the C disk, and do not store things randomly. If the monitor problem is a monitor problem, you need to check whether the electrical socket is energized. If possible, you can also connect it to another computer to see if it works normally.

Reinstall the system when it can be turned on (if nothing appears on the screen every time you restart, the reason for the system is not too big) and enter COMS to restore the factory price setting.Check the power cord and data cable to unplug the power cable and data cable of the optical drive to see if it is normal to work together, and exclude this symptom due to insufficient power supply.

Check whether the hard disk cable is loose. Check the BIOS settings, press the DEL key or the F2 key, enter the BIOS to enter, check whether the date and time are correct, and confirm whether the motherboard battery is out of power and needs to be replaced. Detect the USB disk of the hard disk to start, enter pe, and detect whether the hard disk is damaged or bad. If so, replace the hard disk.

First, click the icon in the lower left corner of the computer to enter the start menu. After entering the start menu, we find the Windows system options. Under the Windows system options, we find the run option and click to enter. Then we enter the command perfmon /report in the running box and then click OK.

How to check whether the system is damaged

You can also remove the injectors and oil rails of all cylinders to check whether there is a large amount of carbon and gasoline impurities in the installation position. If there is, it also means that the filter of the oil pressure regulator is blocked.

First, find and open the "C: WindowsSystem32" folder on the computer. 2. After opening, find the file "cmd.exe" in this folder and right-click on the file. 3. After clicking, a menu will pop up. Select "Run as administrator" in the pop-up menu.

Check whether the hard disk cable is loose. Check the BIOS settings and press the DEL key or F2 key to enterEnter the BIOS to check whether the date and time are correct, and confirm whether the motherboard battery is dead and needs to be replaced. Detect the USB disk of the hard disk to start, enter pe, and detect whether the hard disk is damaged or bad. If so, replace the hard disk.

Check whether the system is functioning normally or the mobile phone system is fully used. If the mobile phone system is damaged, you can enter the recovery mode to see if there is a system recovery mode option. If there is this option, the system can be restored through this function.

Common fault 1: There is no display on the computer. There is no display on the computer. First of all, we need to check the BIOS.

Teach you five steps to check the brake system by yourself

1, 1 check the brake fluid. The amount of brake fluid should be between the upper and lower lines of the liquid storage tank.If the brake fluid is insufficient, the same type and brand of brake fluid should be added, and other types of brake fluid or alcohol substitutes should not be added. 2 Check the "foot feel" of the brake pedal of the hydraulic brake system.

2. When the vehicle has a "Please check the brake system" alarm, the first consideration is whether there is less brake fluid. After opening the engine cover, find the brake fluid cover, slowly unstwer it and see if the brake fluid is between the specified upper and lower scales.

3. Check the wear of the brake pads. Many people will use whether the brake system warning light of the dashboard is on as the basis for replacing the brake friction pads, but it is quite dangerous to wait until this time to replace them.

4. It is usually stipulated that when the handle is pulled to three-quarters of the entire journey, the handbrake system should be in the normal braking position.Therefore, before checking the braking force of the handbrake, you should first find out this working point, which can be determined by counting the sound of the ratchet.

5. Reason for judgment: gas is mixed in the brake system. Fault phenomenon: step on the brake continuously, the pedal return position rises, and the braking effect is improved. Reason for judgment: The gap between the friction pad and the brake drum is too large. Fault phenomenon: continuous braking, the pedal position is raised, and there is a feeling of sinking. Judge the reason: oil leakage.

How to solve the problem of the startup recovery check system as soon as the computer is turned on?

1. If there is a start-up repair, it may be caused by the lack of normal switch. You can choose the advanced option and restart it again. If this still doesn't work, you need to enter the PE system to repair and boot or reinstall the system.

2. Second, using the automatic repair function can detect and solve some system problems to prevent Windows from starting. To run automatic repair, please follow the steps below: 1 Boot to WinRE (Windows Recovery Environment), which can be understood as recovery mode.

3. Restart the computer: First, try to restart the computer. Sometimes it is only a temporary system error that causes the startup repair to appear. Enter safe mode: If the startup repair still appears after restarting, you can try to enter the safe mode. Press the F8 key, select "Enter Safe Mode", and then perform system repair.