In English, what you're referring to are called cross-references.
Each cross-reference is actually a REF field. The result of a
field depends on its field code, that is, the instructions that
determine the value of the field. You can use ALT+F9 to toggle
field code display. With field codes displayed, each reference
will appear similar to:

  { REF _Ref55806941 \h }

The part with numbers is the name of a hidden bookmark, generated
by Word when you inserted the cross-reference. It will be
different for each REF field, unless of course you have
referenced the same figure (or table) more than once! "\h" is a
so-called switch; it makes the field into a hyperlink.

You can add "\* lower" to the end of the field code in order to
force lower-case display. In other words, modify your REF fields
so they look like the following:

  { REF _Ref55806941 \h \* lower }

Then select the entire document and press F9 to update all
fields. Finally, use ALT+F9 to display the field result again.

Stefan