The emulsion of the oil is mainly caused by （）.

cutting fluidscommonly used are A: extreme pressure emulsion or an anti-corrosion emulsion B: Emulsions C: Cutting oils D: Water solutions

下列（）为本体聚合。 A: bulk polymerization B: suspension polymerization C: emulsion polymerization D: solution polymerization

下列（）为本体聚合。 A: bulk polymerization B: suspension polymerization C: emulsion polymerization D: solution polymerizatio

Emulsion oils and sodium nitrite are both approved additives， but the latter cannot be used if any pipes are （） or if any soldered joints exit.

Which of the following liquids is Newtonian fluid A: Polymer solution B: Colloid solution C: Paclitaxel emulsion D: Bacterial oil

Which of the following is not a key factor affecting the stability of the emulsions? A: Selection of emulsifier B: Type of emulsifier C: Packaging of emulsion D: Preparation temperature