What guidelines should be followed for removing frozen hose?
A. Fold the hose while still frozen
B. Place frozen hose on apparatus as soon as possible
C. Use the exhaust manifold heat from the pumping apparatus
D. Perform service testing before placing thawed hose back in service
D
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Which of the following describes a dry-pipe sprinkler system?
a. Air or nitrogen under pressure replaces water in sprinkler above valve, air escapes first when sprinkler activates b. All sprinklers open all the time, no water in piping before activation c. Contains water under pressure at all times, when initiated will immediately discharge water spray and activate alarm d. Dry system that employs deluge-type valve, fire detection devices, and closed sprinklers
A double product greater than 25,000 indicates that
A) the patient has ischemia and the test must be stopped. B) the stress test is positive for coronary artery disease. C) there is 2.5 mms of ST segment elevation in three or more leads. D) an acceptable level of exercise has been achieved during the stress test.