日常维护保养是指在设备运行的前、后和运行过程中的保养作业，该工作由司机进行。()
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齿轮齿条式施工升降机安全装置主要有防坠安全器、安全钩、安全开关、缓冲装置和超载保护装置等。()
For what product was Tylor Construction probably billed incorrectly？
A. GC 35
BD 65
C. WC 30
D. CS 21
What is indicated about Ms. Stewart？
A. She currently works at the Maxton branch office.
B. She has to meet her president on April 7.
C. She is involved in a company project.
D. She is Julia Mason"s assistant.
文献调查主要用于文献信息的搜集，其流程为()
A:进行课题分析
B:确定文献信息搜集重点、大致范围和方位
C:获取全面的文献信息或文
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