单项选择题

How to check the quality during production?（）

A．check every one
B．take samples to check it
C．check it at random

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单项选择题
Which photocopier do they decide to buy? （）

A．The BR200
B．The CMl00
C．The R30.
单项选择题
At goods stage, we make sure that（）

A．quantities are correct
B．quality is OK
C．A and B
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