Exhaust passages are included in some intake manifolds. Technician A says that the exhaust passages are used for exhaust gas recirculation (EGR) systems. Technician B says that the exhaust heat is used to warm the intake charge on some engines equipped with a throttle-body-type fuel-injection system. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
Question 2
The SAI system is used to reduce which exhaust emission?
A) HC B) CO C) NOx D) Both A and B
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