Technician A says that in a diesel CR fuel system the rail supplies all of the injectors required to fuel the engine.  Technician B says that the rail pressures in a diesel CR fuel system are controlled by the ECM. Who is correct?

A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A nor B


Answer: C

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In the Diazo process the print paper and the working drawing are rotated over a large _______ to establish the image on the print paper.

Fill in the blank(s) with the appropriate word(s).

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Gas-fired rooftop units are normally vented through:

A) Draft hoods connected directly to the unit. B) Double-wall vent pipe connected to the top of the unit. C) Double-wall vent pipe connected to the side of the unit. D) A separate power venter.

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The components of a commercial fan coil unit include

A) A compressor, condenser, metering device, and evaporator B) A fan, compressor and condenser C) A fan and electric strip heaters D) A fan, a water coil, a filter, a fresh air supply, and a control system

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The driven gear has 85 teeth. The driver gear has 15 teeth. Find the ratio of the teeth on the driven gear to the driver gear.

A. 4:1 B. 16:3 C. 17:3 D. 6:1

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