17. When you find out the brakes have malfunctioned when riding on the motorcycle, what should you do immediately? (A)Turn on the headlight (B)Let go of the accelerator (C)Honk.

14. Which description about the difference of radius between inner wheels is incorrect? (A)When the vehicle is turning, the rear wheels will shift inward (B)The longer the wheelbase is on a vehicle, the greater the difference is between the radius of the inner wheels (C)A car has no difference of radius in inner wheels.