Just try to answer some questions as well, then you can keep a nice balance.
ps. Only answer the questions you know.
The answer is Benching.
Benching and sloping are methods used to protect employees working in excavations from cave–ins. Benches are cuts in the slope that provides protection by removing material at an angle to its floor. They give the slope a stair-step appearance with emphasis on the angles; the flatter the angle, the more the protection. Benches are split into two groups: simple and multiple.
Optima battery because it is stronger than a factory battery
