Central Heating System

Exit

Question 1 of 1

  Time Left


0
142410
0
120
block

What type of central heating componet is shown in figure 1?

Select the Correct Answers  

(0/0)














142411
0
120
none
142412
0
120
none
142418
0
120
none
142420
0
120
none
142422
0
120
none
142428
0
120
none
142430
0
120
none