Smoke alarms, which are also called smoke detectors, work by constantly checking the air for traces of the gasses and smoke particles produced by a fire.There are two types of smoke alarms-ionization alarms and photoelectric alarms.moke alarms, which are also called smoke detectors, work by constantly checking the air for traces of the gasses and smoke particles produced by a fire.
Q: the BEST way to begin the research process. A: The BEST way to begin the research process is to select a topic that interests you. Expert answered|andrewpallarca|Points 37581|. Log in to see link for more information.
The purpose of preliminary research. The reading you do in the beginning of a research process has two important, specific purposes: 1. It helps you to narrow your topic by finding out how much information is out there and, therefore, what is do-able within the page-limits you have been assigned. 2.