In a typical port fuel injection system, which injectors are most subject to becoming restricted?
A) Any of them equally
B) The injectors at the end of the rail on a returnless system
C) The injectors at the bends in the rail
D) Either B or C
D
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What type of fasteners are pictured here?
?
A. ?self-threading B. ?threaded metal inserts C. ?standard bolts D. ?pull mandrels
Technician A says that an engine that idles rough due to burned valves might run fine at speeds above idle. Technician B says that carbon buildup in a combustion chamber can cause an engine to have higher compression. Who is right?
A. ?Technician A only B. ?Technician B only C. ?Both A and B D. ?Neither A nor B
Technician A says that impact sockets have thicker walls than conventional sockets. Technician B says that impact sockets have a black oxide finish. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
Concrete cures to its maximum strength, under normal conditions, in about _____
a. 7 days b. 14 days c. 21 days d. 28 days