A. He hates it. B. He enjoys it. C. He likes interesting things. D. He dislikes his office.
A. 1个 B. 2个 C. 1个或2个
A. 钢索 B. 槽板配线 C. 瓷夹、瓷瓶、夹板配线 D. 塑料护套配线