|
Regularly.
|
|
|
If there is too little pressure.
|
|
|
If there is too much pressure.
|
|
|
After every stop.
|
27/40.
7.
The safety valve located on the first tank opens:
Answer correctly : 0 | Wrong : 0
Answer Sheet :
Refresh
Refresh this page and redo the question
Restart
Restart this set of tests