In an emergency, fire alarms are essential tools for protecting people and property. Their main job is to use a loud, obvious sound to warn residents of the presence of fire, smoke, or other hazardous situations. How, though, do fire alarms make this sound? The physics and engineering unde...
It's so loud that I can hardly concentrate on my work.W: Don’t worry, Sam. It's just the fire alarm. They test it every Friday at noon. It keeps us safe, and I like to think of it as a friendly reminder that the weekend is coming....
1. Get out fast! When you hear the loud beep of the smoke alarm, get out of the house. Never hide or take time to grab your belongings or pets.2. Follow your escape plan. After all, you've been practicing!3. Feel a door before you open it. If it is hot, there ma...
Put a smoke alarm(烟幕检测器) in the house. Smoke from a fire causes the alarm to go off. The alarm makes a loud sound. The sound tells everyone to leave the house at once.Make escape(逃脱) plans. They should know all the ways out of the house. Part of the plan is to check ...
Smoke from a fire causes the alarm to go off. The alarm makes a loud sound. The sound tells everyone to leave the house at once.Make escape(逃脱) plans. They should know all the ways out of the house.1. Part of the plan is to check all the windows to make sure they can be ...
Smoke from a fire causes the alarm to go off. The alarm makes a loud sound. The sound tells everyone to leave the house at once. Make escape(逃脱)plans. We should know all the ways out of the house. If there is a fire,everyone follows the plan to get out. Part of the plan is...
Putasmokealarm(报警器)inthehouse.Smokefromafirecausesthealarmtogooff. Thealarmmakesaloud sound.Thesoundtellseveryonetoleavethehouseatonce. Makeescape(逃脱)plans.Theyshouldknowallthewaysoutofthehouse.Ifthereisafire,everyone followstheplantogetout.Themostimportantpartoftheplanistocheckallthewindowstomakesurethey...
If there is a fire:Be Safe 1. Get out fast! When you hear the loud beep of the smoke alarm, get out of the house. Never hide or take time to grab your belongings or pets.2. Follow your escape plan. After all, you‘ve been practicing!3. Feel a door before you open...
Despite the noise from the fire alarm, the author still feels happy becauseA. the noise laststoo longB. the noise is not too loudC. the noise reminds the author of the coming of weekendD.the author often ignore it when working2.Ifthere is a fire breaking out in restaurant what will...
If there is a fire:Be Safe 1. Get out fast! When you hear the loud beep of the smoke alarm, get out of the house. Never hide or take time to grab your belongings or pets.2. Follow your escape plan. After all, you've been practicing!3. Feel a door before you open ...