Technician A says that a vibration in the steering wheel when braking is an indication that that rear brake rotors need service. Technician B says that a vibration in the steering wheel when braking is an indication that the front brake rotors need service. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
B
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Refer to Exercise 31. Assume the first card is not replaced before the second card is drawn.
a. Find the joint probability mass function of X and Y.
b. Find the marginal probability mass functions 
(x) and 
(y).
c. Find 
and 
.
d. Find 
.
e. Find Cov(X, Y).
Air entering a refrigerant system can eventually lead to compressor failure.
Answer the following statement true (T) or false (F)
Ohm's law is a mathematical formula that describes the relationship between:
A) Watts, volts, and amps. B) Volts, amps, ohms, and watts. C) Volts, amps, and ohms. D) Ohms, watts, and volts.
Which type of system is designed to maintain a constant supply air temperature between 50°F and 60°F
year-round? a. VVT b. VAV c. Multi-zone d. Economizer