单选题 .  Predictions of large populations of robots in industry have yet to come true. For a decade or more, manufacturers of big robots have explained how their machines can make industry more competitive and productive. The market for     21    robots is now oversupplied, and the driving force of the robotics (机器人技术) revolution is     22    to be with makers of machines that handle a few kilos at most.
    "Heavy-robot manufacturers are in some difficulty     23    finding customers. They are offering big     24    just to get in the door. There has been a     25    growth everywhere in the numbers of robots, so we have to admit we are either deceiving     26    or that the market is slowly growing," said John Reekie, Chairman of Colne Robotics. "The following things must happen     27    the robotics revolution to occur. We must achieve widespread robot literacy (文化),     28    there has been a computer literacy program, there must be a robot literacy campaign. We must also     29    not just a cut in, but a collapse of robot prices.     30    , some kind of artificial intelligence needs to be     31    ."
    Colne makes educational robots and machine tools. It is small     32    with companies like ASEA or Fujitsu Fanuc. But Colne with others and departments in universities such as Surrey, Manchester, and Durham possess an advantage     33    the giants. The big companies sell very expensive     34    to businesses with expert knowledge in automation. The     35    companies make robots for teaching people, and now they have realized there is a need for small,     36    robots that they can meet.
    The little companies either bring their educational machines     37    an industrial standard or design from scratch (从头做起). One technique that they all adopt is to choose     38    components where possible. The major cost of making     39    their models is the electronics, which will fall in price. There is     40    scope for reductions in mechanical costs. The use of standard parts, which are easily replaced, should give these robots a mechanical life of something in the order of five years.21.