All the parts of these washing machines are ______ , so that it is very convenie

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问题 All the parts of these washing machines are ______ , so that it is very convenient to replace them.

选项 A、normalized
B、modernized
C、mechanized
D、standardized

答案 D

解析此题考查动词词义。这些洗衣机的零件全部实行了统一标准，这样更换起来非常便利。standardize意为“使标准化”；normalize意为“使正常化”；modernize意为“使现代化”；mechanize意为“使机械化”。

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