Which of the following types of industrial furnaces and ovens operates at approximately atmospheric pressure where no flammable volatiles or combustible materials are being heated?
A. Class A
B. Class B
C. Class C
D. Class D
B
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All splinting of an injured bone must immobilize:
A) only the joint directly below the injury. B) no joints need to be immobilized. C) the joints directly above and below the injury. D) only the joint directly above the injury.
One of the principles of proper lifting is to:
A) hold your breath while lifting. B) position the load close to your body. C) pull rather than push when possible. D) bend at the waist to use the strong muscles of the back.
When the lung collapses without injury or any other cause, it is called which of the following?
A) Spontaneous pulmonary embolism B) Spontaneous pertussis C) Spontaneous pneumothorax D) COPD
Which of the following is a general term used to denote hypersensitivity of the nasal mucosa to allergens?
a. Common cold b. Bronchitis c. Pneumonia d. Hay fever c