The point at which steel begins to develop brittle properties is when the carbon content is just above _____
a. 1.0 percent
b. 1.2 percent
c. 1.4 percent
d. 1.7 percent
c
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When a formula has more than one mathematical operation, first ____.
A. resolve any derivatives B. perform all operations within parentheses C. do all multiplication and division working from left to right D. do all addition and subtraction working from left to right
The voltage output of a zirconia oxygen sensor when the exhaust stream is lean (excess oxygen) is ________
A) Relatively high (close to 1 volt) B) About in the middle of the voltage range C) Relatively low (close to 0 volt) D) Either A or B, depending on atmospheric pressure
Cooling towers in which the water circulating in the tower is separate from the water circulating through the condenser are called:
A) Regenerative cooling towers. B) Closed-loop cooling towers. C) Open-loop cooling towers. D) Evaporative cooling towers.