1, a special storage format file defined by Word document; 2. The national foreign language test for overseas training candidates, the English name is Business Foreign Language Test (BFT；; ); 3. BFT coke oven gas fuel trips; 4. The abbreviation of the chariot in the game is recoil. In the game, the fearless chariot is called the combat tank (bft), which is a powerful tank in the future. It can strengthen its attack ability by acquiring enemy weapons. There are 18 weapons available, and they are really as proficient as 18 weapons. This game has six levels.