The Boolean expression 
is equivalent to
A. B
B. 
C. 
D. AB
E. A
Answer: C
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Figure 39-2
When the START button is pushed in the accompanying figure, relay coil CR is energized. This causes all CR contacts to close. Contact CR-1 is a(n) ____________________ used to maintain the circuit to coil CR when the START button is released.
Fill in the blank(s) with the appropriate word(s).
A(n) ____________________ is a product that is shipped from the United States to a foreign country
Fill in the blank(s) with correct word
Dampers (damper springs) are used inside some valve springs to ________
A) Keep the valve spring attached to the valve B) Prevent valve spring surge C) Decrease valve spring pressure D) Retain valve stem seals
The wiring and connectors that carry the power to a motor must be in good condition. When a connection becomes loose, oxidation of the copper wire occurs. The oxidation ____.
A. has no effect on the electrical connection B. acts as an electrical resistance and causes the connection to heat more C. decreases the resistance D. none of the above