for example, a mouse continuing to attempt to escape when escape is obviously impossible. our hearts did not let us do it. let  and 
 are first-order operators. that means that over  of oil remained in the gulf. he was playing bantam minor ice hockey before high school. some military or specialized aircraft may have other flight crew members in the cockpit as well. for example, in an 18-hole match, the first hole is a par-4 and player a scores a 3 (birdie) and player b scores a 4 (par); player a is now 1-up with 17 to play. 