2. 外语
  3. A new system of quality control was ______to overcome the defects in the firm’s products.

A new system of quality control was ______to overcome the defects in the firm’s products.

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问题 A new system of quality control was ______to overcome the defects in the firm’s products.
选项 A、installed
B、inserted
C、introduced
D、admitted
答案C
解析 introduce vt．引进，传入，采用；介绍，使了解。(如：Coffee was introduced into England from the continent．introduce new techniques in industrial production；introduce sb．to sb．else．)。instal(l)vt．安装，装置。insert(into)vt．捅入，嵌入。admit vt．承认，供认；准许进入，准许加入。
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