A periodic discrete-time signal with fundamental period N = 3 has the values x [1] = 7, x [2] = ?3, x [3] = 1.
If 
find the magnitude and angle (in radians) of X [1] .
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Technician A says that all late -model vehicles require manual adjustment of the bands at regular intervals. Technician B says a torque wrench is usually needed for proper band adjustment. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
What is the best way to clean the leaves of an indoor plant?
A) Wash with a diluted ammonia solution B) Use a professional strength household cleaner C) Wash with a fine spray of water D) Wash with a heavy shower of water
You should lift with your back and not your legs.
Answer the following statement true (T) or false (F)
On a vehicle with a mass airflow injection system, which of the following is likely to occur with a vacuum leak at idle?
A) Lean fuel mixture B) No fuel mixture change C) Rich fuel mixture D) None of these