Hand signals for hoisting equipment can only be provided by qualified signal persons and _____.
a. ironworkers
b. supervisors
c. stationary engineers
d. riggers
d. riggers
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Earthworms are sold to gardeners to help improve the movement of air and water through soil.
Answer the following statement true (T) or false (F)
In a reactor, the gas phase reaction A ? B is at equilibrium with yA = 0.75 and yB = 0.25. An inert gas is added to the mixture, but no A or B is added or removed. Then the system is allowed to reach a new equilibrium at the same T and P as the original equilibrium. Both equilibrium states can be modeled as ideal solutions. Which of the following correctly describes the effect of adding the inert on the system?
A. The reaction will shift to the right, forming more moles of B than in the original equilibrium. B. The reaction will shift to the left, forming more moles of A than in the original equilibrium. C. The numbers of moles of A and B will be the same as in the original equilibrium. D. Answers A and B are both possible but the correct one cannot be determined from the given information. E. The scenario is impossible because adding inert gas will inevitably increase the pressure.
The ____________________ of a weld is the deepest point into the joint where fusion between the base metal and the filler metal occurs.
Fill in the blank(s) with the appropriate word(s).
OSHA requires that records of job-related injuries be kept for _______
A) No more than 3 years B) Only serious injuries C) A variable length of time, depending on the injury D) At least 5 years