Preposições - Preposições de parâmetro e especificação

used to specify the standard or unit used to evaluate or measure something

por

used to indicate the rate or percentage of one quantity to another

em

used to indicate a standard or basis for evaluation or judgment

em

for one person or thing

por

used to indicate the criteria or parameter according to which something is defined or customized

para

used to specify a particular member of a broader group

de

used to indicate the relationship between a sum of money (loan, financing, guarantee) and the corresponding asset or security

contra

used to specify the reference point or standard by which something is judged, compared, or evaluated

para