What is the advantage of using a pressure relief valve to protect a receiver instead of a fusible plug?
A) Pressure relief valves are less expensive.
B) The pressure relief valve resets itself.
C) Pressure relief valves can also be used to check the receiver pressure.
D) It is impossible for a pressure relief valve to malfunction.
B
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In a special torsion pendulum used for elastic after?effect measurements, it is not practical to measure the relaxation time if it is less than 1 minute. On this basis, determine the maximum temperature at which the apparatus should be used for determining the relaxation time of nitrogen atoms in iron. Take ? ? 0.28664 ?? and see Table 13.2 for the diffusion equation of iron.
What will be an ideal response?
Which of these is NOT a greenhouse gas?
A) Methane B) Carbon dioxide C) Nitrous Oxide D) All of these are greenhouse gasses
Spray transfer, globular transfer, and pulsed transfer are _____
a. GMAW metal transfer modes b. SMAW metal transfer modes c. types of GMAW/FCAW guns d. types of external wire feeders
ASE-Style Multiple Choice Which of the following statements is LEAST-Likely true?
A. A lightweight air grinder is ideal for doing minor rust repair. B. Metal conditioner is an acid compound that neutralizes microscopic rust particles. C. Sandblasting or plastic media blasting should not be used in place of disc and die grinding. D. Rust can form on either side of a metal panel.