In order to______the life of the machine, regular maintenance is required every

游客2025-06-14 1

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。

转载请注明原文地址:https://tihaiku.com/zcyy/4117476.html

相关试题推荐

随机试题

最新回复(0)

Applicantsseekingspecialconsiderationmustsubmitalltherequireddocuments_