CREATE TABLE table_10007452_3 (fuel_propulsion VARCHAR, fleet_series__quantity_ VARCHAR)

what is the fuel propulsion where the fleet series (quantity) is 310-329 (20)?
SELECT fuel_propulsion FROM table_10007452_3 WHERE fleet_series__quantity_ = "310-329 (20)"
SELECT "fuel_propulsion" FROM "table_10007452_3" WHERE "310-329 (20)" = "fleet_series__quantity_"