[简答题]K01、K30、P01、P30是什么刀具材料？各适合于加工哪类工件材料？在怎样的加工要求下选用？

The human brain contains 10 thousand million cells and each of these may have a thousand connections. Such enormous numbers used to discourage us and cause us to dismiss the possibility of making a machine with human-like ability, but now that we have grown used to moving forward at such a pace we can be less sure. Quite soon, in only 10 or 20 years perhaps, we will be able to assemble a machine as complex as the human brain, and if we can we will. It may then take us a long time to render it intelligent by loading in the right software(软件) or by altering the architecture but that too will happen.
I think it is certain that in decades, not centuries, machines of silicon (硅) will arise first to rival and then exceed their human ancestors. Once they exceed us they will be capable of their own design. In a real sense they will be able to reproduce themselves. Silicon will have ended carbon’ s long control. And we will no longer be able to claim ourselves to be the fine
A. after the installation of a great number of cells and connections, robots will be capable of self-reproduction
B. with the rapid development of technology, people have come to realize the possibility of making a machine with human-like ability
C. once we make a machine as complex as the human brain, it will possess intelligence
D. robots will have control of the vast, man-made world in space

The Norwegian Nobel Committee has decided to (21) the Nobel Peace Prize for 1998 to John Hume and David Trimble for their efforts to find a (22) solution to the conflict in Northern Ireland.
Over the past thirty years, the national, religious and social (23) in Northern Ireland has cost over 3,500 people their lives. John Hume has throughout been the clearest and most (24) of Northern Ireland’s political leaders in his (25) for a peaceful solution. The foundations of the peace agreement (26) on Good Friday 1998 reflect principles which he has stood for.
As the (27) of the traditionally predominant party in Northern Ireland, David Trimble showed great political (28) when, at a critical stage of the process, he advocated solutions which led to the peace (29) . As the head of the Northern Ireland government, he has (30) the first steps towards building up the mutual confidence on which a last
A. written
B. signed
C. acted
D. agreed