In the electrode designation E12018, the fourth digit represents the _____
a. tensile strength
b. welding position
c. flux type
d. type of welding machine to be used
b
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Iron is essential for:
a. hemoglobin c. red blood cell formation b. oxygen transportation d. all answers
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Flue-gas analysis instruments analyze products of combustion from fossil-fuel-burning equipment, such as oil and gas furnaces and ____.
A. boilers B. CO2 testers C. cooling towers D. refrigerators
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Gaining acceptance and favor are commercial ties for replacing wire and hose links for staking plants
Indicate whether the statement is true or false
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Biologists once insisted that the _____ needed old-growth timber for survival
a. white-tailed deer c. spotted owl b. wild turkey d. red fox
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