NEW YORK (Reuters) - Most chief executive officers of large U.S. companies expect higher sales and higher capital spending in the next six months, but their optimism about economic conditions and expectations for growth are more muted than three months ago, according to a quarterly survey. (http://feeds.feedburner.com/~ff/reuters/topNews?d=yIl2AUoC8zA) (http://feeds.feedburner.com/~ff/reuters/topNews?i=aPoF6f-JV70:V5UgQ4nTPPg:V_sGLiPBpWU) (http://feeds.feedburner.com/~ff/reuters/topNews?i=aPoF6f-JV70:V5UgQ4nTPPg:-BTjWOF_DHI) (http://feeds.feedburner.com/~r/reuters/topNews/~4/aPoF6f-JV70)