单项选择题
What is the percentage of college graduates getting jobs through university Careers Service
A.30-40%.
B.20-30%.
C.40-50%.
D.20-40%.
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单项选择题
The computer sends signal in the form of ______.
A.electrical impulses
B.machines
C.instructions
D.automatic impulses
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单项选择题
What was the origin of the traditional image of robot
A.Welding car.
B.Computer.
C.Machine.
D.Science fiction.
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