table: 1-10007452-3
columns: Order Year, Manufacturer, Model, Fleet Series (Quantity), Powertrain (Engine/Transmission), Fuel Propulsion
Q: what is the fuel propulsion where the fleet series (quantity) is 310-329 (20)?
A: SELECT Fuel Propulsion FROM 1-10007452-3 WHERE Fleet Series (Quantity) = '310-329 (20)'