1, fire extinguishers are usually placed on the driver's seat, near the passenger door and rear engine compartment three. 2. There are manual rotary switches near the door. Once the driver can't open the door, the passenger can turn the switch and push the door to open the door.
3. For a few air-conditioned vehicles equipped with sealed glass, first find a safety hammer. If the escape window is more difficult to escape, you can also escape from the skylight.
Cough, I hope everyone will never use this.
Low carbon USS flat washers, typically used with Grade 8 or hardened steel bolting, are used under bolt heads or nuts to increase the bearing surface area, or to offer protection so that the nut or bolt can be rotated without distortion of the bearing surface. Flat washers are also used to give tightness to a joint, to prevent leakage, and especially to distribute pressure under the head of a bolt or nut. Dimensional specifications are governed by ASME B18.21.1. USS (United States Standard) flat washers have a larger outer diameter than SAE (Society of Automotive Engineers) flat washers, and can be utilized in nearly any application. ASTM F844 covers the standard specifications for unhardened steel flat washers for general use. Available in zinc plated finish. Zinc plating sacrifices itself, corroding before the base material, offering added corrosion resistance.
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