1. Let your family know that when you meet a stranger's request to send flowers, rice, mail, meter reading, etc., you need to be more careful, and you can only open the door after confirming the identity of the other party.

2. If the power meter is outdoors, when there is a sudden power failure, you should first pay attention to whether there are dangerous situations or suspicious people outside the house before you go out to check.

3. Leave your contact phone number, the phone number of the residence management office, the alarm phone number 110, the information of the reservation visitor and the cargo delivery person to the elderly or servants at home.

4. When a gangster enters the house at home, don't try hard. Try to call the police; or shout loudly to scare away the gangster; try to let the neighbor know your situation and ask the outside for help.

5. If you go home and find that the door lock has been broken or opened, or there is a strange sound in the house, suspect that a thief is still in the house, you should be vigilant and immediately call the police when you exit the house.

6. If you find that you have been stolen at home, don't walk into the house or count the property at random, so as not to damage the scene, you should call the police and deal with it.

7. Mark your valuables (such as cameras). Such items are more difficult for thieves to take off, and the selling price is not high, so thieves generally do not take them away.

8. After dark, the curtains should be pulled up. If a suspicious character is found wandering outside the window, call 110 to call the police.

9. Doors and windows should be strong, and the conditions outside the house can be seen clearly in the iron door.

10. If a stranger makes a phone call to your home, do not disclose whether you are at home alone; in addition, do not tell the other party in the phone recording that you have gone out.

11. Lock doors and windows and draw curtains before going to bed or going out.

12. Households allowed by economic conditions, it is best to install an automatic alarm system, the cost of which is roughly equivalent to the cost of installing an anti-theft network.

13. When the weather is hot and you want to open the window to sleep, you must lock your wallet and other valuables to prevent theft by the thief "fishing goldfish".

14. The family who buys a new house should try to choose a community with perfect prevention functions. Safety is the most important thing for you.

15. Close the door when entering or leaving the community public security door.

16. Do not store large amounts of cash and jewelry at home.

17. The door lock is damaged or the key should be replaced in time.

18. You should help with your neighbors. If you find suspicious people or things, you should call the police immediately.

Drill and tap set

Taps and dies are tools used to create purpose screw threads, which is called threading. Many are cutting tools; others are forming tools. A tap is used to cut or form the female portion of the mating pair (e.g. a nut). A die is used to cut or form the male portion of the mating pair (e.g. a bolt). The process of cutting or forming threads using a tap is called tapping, whereas the process using a die is called threading.
Using an ordinary tap or die to clean threads generally removes some material, which results in looser, weaker threads. Because of this, machinists generally clean threads with special taps and dies-called chasers-made for that purpose.

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