Which of the following are types of check valves? (Select all that apply.)

a. swing
b. lift
c. ball
d. gate


a. Correct. Swing is a type of check valve.
b. Correct. Lift is a type of check valve.
c. Correct. Ball is a type of check valve.
d. Incorrect. Gate is not a type of check valve.

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You need to select one component to serve as the _________________________, which will remain stationary with the other instances moving into place around it.

Fill in the blank(s) with the appropriate word(s).

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According to the National Electrical CodeĀ®, After a main power failure, the activation of an emergency system must take place within ________.

A. 10 seconds B. 30 seconds C. 45 seconds D. 1 minute

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Identify the two types of hair that comprise wool, where each comes from, and the function of each

What will be an ideal response?

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Technician A says that generic scan tools must be able to read all generic OBD-II codes. Technician B says that all generic scan tools must be able to read manufacturer OBD-II trouble codes. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B

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