This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Which of the following is a type of security system? a. motion detectors. b. light sensors. ... (Read 68 times)

jhjkgdfhk

  • Hero Member
  • *****
  • Posts: 569
on: Aug 28, 2018
Which of the following is a type of security system?
 
  a. motion detectors.
 
   b. light sensors.
 
   c. electronic pass codes.
 
   d. all of the above.

Question 2

An acceptable sound level to conduct concentrated work is
 
  a. 10 dB.
 
   b. 30 dB.
 
   c. 70 dB.
 
   d. 130 dB.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

paavo

  • Sr. Member
  • ****
  • Posts: 301
Reply #1 on: Aug 28, 2018
Answer to Question 1

D

Answer to Question 2

B


jhjkgdfhk

  • Hero Member
  • *****
  • Posts: 569
Reply #2 on: Aug 28, 2018
Both answers were spot on, thank you once again


paavo

  • Sr. Member
  • ****
  • Posts: 301
Reply #3 on: Aug 28, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Attachment security correlates with later social competence. Attachment security correlates with later social competence.
L-type calcium channel: (a) Calcium channel opens when an action potential passes across the ... L-type calcium channel: (a) Calcium channel opens when an action potential passes across the ...
Fatty acid desaturation system Fatty acid desaturation system
Physics - Motion (Please help me solve these problems, I really need help) Physics - Motion (Please help me solve these problems, I really need help)
Calculation of the probabilities in a mating involving the ABO blood type Calculation of the probabilities in a mating involving the ABO blood type
Some of the major nerves of the human nervous system Some of the major nerves of the human nervous system
Video: Deglutition

For a complete list of videos, visit our video library