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When an electrohydraulic injector is de-energized, the bleed orifice is _______.

The fuel droplet size decreases as injection pressure increases.

Technician A says that you should not attempt to rebuild modern injectors. Technician B says that modern injectors are made to be rebuilt by technicians to provide faster service repairs. Who is correct?

Technician A says that on EHI systems the ECM sends an electrical signal to the EHI to close the solenoid valve when fuel injection is requested. Technician B says that on EHI systems the ECM always applies power to the injector and disconnects the electrical signal to “pulse-fire” the injector. Who is correct?

Initial ATP production, when shifting from rest to exercise, happens through the __________ pathways.

Resting RER (respiratory exchange ratio) is usually around 1.0.

The greatest amount of O2 a person can consume and use to produce ATP is called _________.

Which system allows for quick, short-lived localized control of physiological processes?

What are the 4 major causes of fatigue? Briefly describe them.

It takes about 30-35 minutes after an exhaustive sprint bout to reestablish resting muscle pH.