单项选择题

What kind of robots does the man refer to

A．Agricultural robots.
B．Industrial robots.
C．Computers.
D．Electrical robots.
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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%.
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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