Make use of the arrow keys to regulate thrust and route, push House to fire guns, and make use of the X and C keys for missiles and parachutes.知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。知�