The two most common types of trencher machines are the walk behind and the attachment models. They are used for digging trenches for laying pipe, cable or for trench warfare.
There are two types of military service. The more common is the voluntary service which is practiced in most of the country. The other less common type is conscription, which is mandatory service. It is practiced by few countries like Israel and Mexico. A volunteer enlistee is known as a soldier (army), sailor(navy) and airman (air force) and a person serving under conscription is generally called conscript.
infantry and engineers
Communism (USSR) and Capitalism (USA)
Two Most Honorable Knights was created in 1988.
There are several terms that involve peace between two countrues: non-aggression pact, armistice, and truce are the most common
The two most common types of compressors are the positive-displacement and the velocity or dynamic.
The two most common triads are the Major and the minor triad. The other two types of triads are diminished and augmented triads.
The two most common types of the disease are Bancroftian and Malayan filariasis, both forms of lymphatic filariasis.
anticlines and synclines
O+ and A+
anticlines and synclines
rudder rudder post
The two most common types of fans and blowers are the axial and the centrifugal, which together account for about 45 percent of the industry's output.
The use of long lines and different types of netsare the two most common methods of commercial fishing.
internal and external
You have been asked by your manager to conduct a preliminary search of recommending the two most common types of contemporary planning techniques - Project Management and Scenario Planning.
The two types of radioactive dating that are most common are: Carbon 14 and Potassium-Argon. There are quite a few others.