Illuminated entry systems turn on the ____ lights before the doors are opened.
A. low beam
B. parking
C. courtesy
D. side marker
Answer: C
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Technician A says when a vehicle is carrying a continually heavy load, the vehicle should be equipped with heavy-duty coil springs. Technician B says automatic load leveling is a function of variable rate springs. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
Blood is taken from each of n individuals to be tested for a certain disease. Rather than test each sample separately, a pooled method is used in an attempt to reduce the number of tests needed. Part of each blood sample is taken, and these parts are combined to form a pooled sample. The pooled sample is then tested. If the result is negative, then none of the n individuals has the disease, and no further tests are needed. If the pooled sample tests positive, then each individual is tested to see which of them have the disease.
a. LetX represent the number of tests that are carried out. What are the possible values of X?
b. Assume that n=4 individuals are to be tested, and the probability that each has the disease, independent of the others, is p=0.1. Find 
.
c. Repeat part (b) with n=6 and p=0.2.
d. Express as a function of n and p.
e. The pooled method is more economical than performing individual tests if < n. Suppose n=10. For what values of p is the pooled method more economical than performing n individual tests?
An advantage of using galvanized sheet metal over other materials when assembling a duct system is it _____.
a. is very quiet b. is resistant to corrosion c. is the least expensive d. exhibits the lowest heat loss
What is pipe primarily used for?? ?
What will be an ideal response?