Some gaskets use a steel washer around each bolt hole. The ...

[mmm]

Some gaskets use a steel washer around each bolt hole. The purpose of this washer is to ________.
 
  A) Prevent the gasket from being compressed too much
  B) Help seal around the bolt hole
  C) Help prevent the gasket from shrinking
  D) Improve the strength of the gasket

Question 2

A ________ is the time and distance between two consecutive points, either high or low.
 
  A) Wavelength B) Frequency C) Amplitude D) Period

[Chelseyj.hasty]

Answer to Question 1

A

Answer to Question 2

A