Engine : Expired / General Subjects - 329/8066
|
|---|
| « Previous Question |
| A gate valve installed in a piping system should be used __________. |
| A) to throttle the flow of liquid |
| B) only for lube oil service |
| C) only with the stem facing down |
| D) in either fully closed or fully opened positions |
loading answer...
| Comments |
|---|
| There are no comments for this question. |