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In order to______the life of the machine, regular maintenance is required every
In order to______the life of the machine, regular maintenance is required every
游客
2025-06-14
18
管理
问题
In order to______the life of the machine, regular maintenance is required every month.
选项
A、insist
B、endure
C、persist
D、prolong
答案
D
解析
词汇:动词1.这是一道词汇题,选项均为动词。2选项中the life of the machine作宾语,从语意上看应选择D选项prolong。
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