Egg yolk contains lecithin which acts a an emulsifier.It can be used to stabilize emulsions.Adding egg yolk to a mixture of oil and water prevents the two liquids from separating.。

Egg yolk contains lecithin which acts a an emulsifier.It can be used to stabilize emulsions.Adding egg yolk to a mixture of oil and water prevents the two liquids from separating.。
A.正确
B.错误
正确答案：正确