Bile contains no digestive enzymes and can emulsify fat into fat granules, which belongs to () digestion.

The digestive glands of human body mainly include salivary gland (secreting saliva, containing salivary amylase), liver (secreting bile, but not containing digestive enzymes, but emulsifying fat and increasing the contact area between fat and digestive juice), pancreas (secreting pancreatic juice, containing various digestive enzymes), stomach gland (secreting gastric juice, containing pepsin) and intestinal gland (secreting intestinal juice, containing various digestive enzymes).

So: √.