Key Survey Enterprise is a data collection tool for the whole company. American Airlines uses their custom research surveys to test a lot of ideas. For example, the airline has a relationship with Citibank, which has a MasterCard.
1 Category A (A-segment) vehicles are 2-box vehicles of between 4 and 4.5 meters in length, or three-box vehicles (i.e., sedans with a trunk) with engines of less than 1600 cc.  Category B (B-segment) vehicles are longer than 4.5 m in length with engines of over 1600 cc.
Engines are measured by displacement, usually expressed in liters (L) or cubic centimeters (cc). Displacement is the total volume of all the cylinders in an engine. An engine with four cylinders of 569cc each totals 2276cc, and will be rounder off and referred to as a 2.3 liter engine.Larger engines tend to produce more power â specifically more torque (see below) â but use more fuel.For more on what goes on inside the cylinders, see How Engines Work .) Most cars and SUV enginess have four, six, or eight cylinders. Generally, an engine with more cylinders produces more power, while an engine with fewer cylinders gets better fuel economy.