Hmmm. I'm going to take an educated guess. No guarantees.
1. Petroleum-derived (gasoline and diesel fuel)
2. Compressed Natural Gas (CNG)
3. Biodiesel (vegetable/organic distillates)
4. Fuel cells (hydrogen)
"Electricity" might be considered a fuel, but that's unclear from the question as written. The biodiesel might be considered the same thing as petroleum diesel.
Straight/Inline engines, V type engines, Rotary engines and diesel engines
The spark plug will fire once every four strokes, at the end of the compression stroke.
Google.com Yahoo.com Msn.com Facebook.com P.s. Haha..lol
There mainly four search engines Goolgle, Yahoo, MSN(Bing), and ASK other follow the pattern of these fours.
The B-series are a family of inline four - cylinder DOHC automotive engines introduced by Honda in 1989. Sold concurrently with the D-series which were primarily single-cam engines designed for more economical applications.
There are four engines.
There are actually four types of springs used in the suspension system. They are coil springs, leaf springs, torsion bars, and air springs.
There is currently no plans to make a movie based on the Mortal Engines book. Obviously, there are no open auditions because there is no movie being made.
The Boeing 747 uses four engines.
A Boeing 747 has four engines.
There are four types of DBMS users,Naive UsersOnline UsersApplication Program UsersDatabase AdministratorNote: The description of above points is currently not available.
jet engines, turbojet engines, turbo-prop engines, four-stroke piston driven engines... Can you be more specific?