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Technician A says the name semi-trailer comes from the coupling method by which some of the trailer’s load is actually carried by the tractor through a connection known as a “fifth wheel.” Technician B says a “fifth wheel” is a hitching device located behind its drive wheels. Who is correct?

An engine identification label contains all of the following information, EXCEPT:

A set-back axle __________ the vehicle’s turning radius.

Technician A says most cabs include some type of aerodynamic fairings and wind deflectors to improve fuel economy. Technician B says aerodynamic enhancements are another consideration when developing vehicle specifications. Who is correct?

Technician A says on-highway conditions means that vehicles operate on intermittent grades of 12%. Technician B says off-highway vehicles must operate within legal weight and dimensional limitations. Who is correct?

How was urban development in the Southern Colonies compared to other regions?

Vehicles classified primarily for picking up and delivering goods and services operate mostly within __________.

Which crops were introduced to Europe from the Americas during the Columbian Exchange?

What was the state of the Americas before European contact?

What was the primary means of technical and professional training in Colonial America?