Why should the vacuum pump isolation valve be closed before turning off the vacuum pump?
What will be an ideal response?
The vacuum in the system can suck the oil in the pump out of the pump and into the hoses, vacuum gauge, or even the system if left long enough.
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The most commonly used material for floor sheathing in a wood light-frame building is
A) 1 × 4 lumber. B) gypsum board panels. C) high-density fiber board panels. D) OSB panels. E) high-density fiber board panels laminated to gypsum board.
Sawdust added to soil can cause nitrogen deficiency
Indicate whether the statement is true or false
To keep drawings stacked, you should thaw all layers after moving one layer.
Answer the following statement true (T) or false (F)
A clamp should be positioned at the most rigid point of the part.
Answer the following statement true (T) or false (F)