Fist has heart and eye. Fist face. Wheel and back elements. The thumb of the fist should be pressed against () of the index finger of the middle finger. A: First knuckle B: Second knuckle C: at random D: palm root

The manual steering system relies on the driver’s steering power to steer the wheel.It mainly consists of steering control mechanism (including steering wheel, steering column, etc.), steering gear, steering linkage mechanism (including steering tie rod, steering knuckle arm, steering knuckle, steering vehicle wheel, etc.).

The converts the rotation motion of the steering wheel into the straight-line motion. A: Steering knuckle B: Steering gear C: tie rod D: drag link