Artificial intelligence
The hardware features of LISP machines generally include:

letter-quality printers and 8-inch disk drives
both (a) and (c)
a mouse and a specialized keyboard
large memory and a high-speed processor
None of these

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Artificial intelligence
A heuristic is a way of trying __________

To search and measure how far a node in a search tree seems to be from a goal
All of the mentioned
To compare two nodes in a search tree to see if one is better than the other is
To discover something or an idea embedded in a program

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