A cryogenic liquid tank car will have:
a. A single un-insulated shell.
b. An enclosed dome.
c. A double shell with insulation.
d. Fittings and valves visible on top of the tank car.
Answer: c. A double shell with insulation.
Health Professions
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Why might controlled hypotension be used during surgery?
A) to protect neurons B) to stabilize blood pressure C) to reduce blood loss D) to induce vasoconstriction
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Severe caries is seen radiographically as a radiolucency that has
A) penetrated less than halfway through the enamel. B) penetrated over halfway through the enamel but did not reach the DEJ. C) penetrated at or through the DEJ but less than halfway through the dentin toward the pulp. D) penetrated over halfway through the dentin toward the pulp.
Health Professions