What type of diodes emit light when a current passes through them?
A. Zener
B. Halfway
C. LED
D. DC
C
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To bleed air from a power steering system with the engine running:
A. Loosen the high pressure hose at the gear B. Loosen the return hose at the gear C. Loosen the return hose at the pump D. Turn the steering wheel fully in both directions
Estimating the value of ?. The following figure suggests how to estimate the value of ? with a simulation. In the figure, a circle with area equal to ?/4 is inscribed in a square whose area is equal to 1. One hundred points have been randomly chosen from within the square. The probability that a point is inside the circle is equal to the fraction of the area of the square that is taken up by the circle, which is ?/4. We can therefore estimate the value of ?/4 by counting the number of points inside the circle, which is 79, and dividing by the total number of points, which is 100, to obtain the estimate ?/4 ? 0.79. From this we conclude that ? ? 4(0.79) = 3.16. This exercise presents a simulation experiment that is designed to estimate the value of ? by generating 1000 points
in the unit square.
a. Generate 1000 x coordinates 
. Use the uniform distribution with minimum value 0 and maximum value 1.
b. Generate 1000 y coordinates 
again using the uniform distribution with minimum value 0 and maximum value 1.
c. Each point 
is inside the circle if its distance from the center (0.5, 0.5) is less than 0.5. For each pair , determine whether its distance from the center is less than 0.5. This can be done by computing the value 
, which is the squared distance, and determining whether it is less than 0.25.
d. How many of the points are inside the circle? What is your estimate of ??
The DOT number assigned to brake fluids refers to the type of fluid
Indicate whether the statement is true or false
Technician A says that a vacuum leak can cause a rough idle or stalling. Technician B says that spark knock (ping or detonation) is often caused by a too rich air-fuel mixture or an excessively low engine operating temperature. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician