Progressive scientific research began in the United States around the:
a. Early 1800s c. Middle 1800s
b. Middle 1900s d. Late 1700s
C
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When the nail tip is larger than the real nail, you can adjust it by using _______?
Fill in the blank(s) with the appropriate word(s).
When servicing a driveshaft, technician A says that its a good idea to tape the U-joint caps to prevent them from coming off. Technician B says that needle bearings are used with these type U-joints. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
Most authorities accept ____ piping as a safe means of conveying a combustible gas to its final destination.
A. plastic B. sweated copper C. threaded steel D. PEX
Digital manometers can be used to check:
A) CO ppm. B) Vents for proper operation. C) Percentage of CO2. D) Air particle count.