Which of the following is a common type of weld in heavy construction?
A. Slot weld
B. Horizontal weld
C. Channel weld
D. Gutter weld
Answer: A
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When a left-handed welder is making a cut with a hand torch, the torch should be braced ____.
A. with the left hand B. with both hands C. with a clamp D. with the right hand
Mom and Grandma are each baking chocolate chip cookies. Each gives you two cookies. One of Mom’s cookies has 14 chips in it and the other has 11. Grandma’s cookies have 6 and 8 chips.
a. Estimate the mean number of chips in one of Mom’s cookies. b. Estimate the mean number of chips in one of Grandma’s cookies. c. Find the uncertainty in the estimate for Mom’s cookies. d. Find the uncertainty in the estimate for Grandma’s cookies. e. Estimate how many more chips there are on the average in one of Mom’s cookies than in one of Grandma’s. Find the uncertainty in this estimate.
What happens when refrigerant leaking from an AC circuit comes into contact with an open flame?
A. it contaminates B. it may combust C. poisonous phosgene gas may result D. all of the above
Figure 10-2 In Figure 10-2, the signal from TT401 is sent to an instrument which performs which type(s) of function(s)?
What will be an ideal response?