(1) COke reacts with steam at high temperature to obtain co and H 2, which accords with the definition of displacement reaction, so it belongs to displacement reaction.

(2) According to the meaning of the question, the reactants are carbon monoxide and nitric oxide. According to the law of conservation of mass, the types of elements are unchanged before and after the chemical reaction, and the known products are nitrogen and carbon dioxide and their chemical equations.

For: 2CO+2NO？ Catalyst? . ? 2CO 2+N2；

So the answer is: (1) substitution reaction; (2)2CO+2NO？ Catalyst? . ? 2CO 2+N2；