(2013? Xuzhou Yimo) The car in the picture is a familiar means of transportation, which provides convenience to our lives. Cars use a lot of physics

(1) During the compression stroke, the intake valve and exhaust valve are closed, and the piston moves upward, compressing the mixture of gasoline and air, converting mechanical energy into the internal energy of the gas, and its internal energy increases. The temperature rises;

(2) The windshield is equivalent to a plane mirror. Because the plane mirror forms a virtual image, the windshield is installed at an angle to avoid the image of the scenery in the car caused by the plane mirror. Directly in front of the car, affecting the driver's sight.

(3) When the car is traveling at high speed, the air flow velocity above the airflow deflector is small and the pressure is strong; the air flow velocity below the air deflector is high and the pressure is small. The downward pressure of the air on the car is greater than the upward pressure, so the gas exerts a downward pressure on the car, allowing the car to "grasp" the ground better.

So the answer is (1) compression; (2) virtuality; (3) the relationship between fluid pressure and flow rate.