A(n) （） is a device which adds to the energy of a liquid or gas causing an increase in its pressure and a movement of the fluid.

Lubricating oil systems are fitted with a wide variety ...

单项选择题Lubricating oil systems are fitted with a wide variety of strainers some of which can be cleaned in site while others have replaceable cartridgesThe bold and italic word “which” means （）.

In many installations basket strainers consist of a cyl...

单项选择题In many installations basket strainers consist of a cylindrical container in which a perforated metal or wire basket is suspendedThe bold and italic word “which” means （）.

Strainers, sometimes called （）, are devices designed to...

单项选择题Strainers, sometimes called （）, are devices designed to prevent the passage of unwanted solids into or further along a system.