题目内容

Interviewer: Do you want a (1)or a part-time job?Applicant: A part-time job. I have to (2)Interviewer: Do you mind working on (3)?Applicant: Not at all. Because I have to study during the day.Interviewer: Very well. The night shift is from 6 p.m. to 12 p.m. Then, what is the(4)you may consider?Applicant: Twenty yuan per hour.Interviewer: It’s a deal. When can you (5)?Applicant: I can start anytime.Interviewer: Good. You can come tomorrow evening.Applicant: Thank you very much. See you tomorrow.Interviewer: See you.

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主要用于降低液压系统中某一支路的油液压力。

A. 溢流阀
B. 顺序阀
C. 减压阀
D. 压力继电器

减压阀在结构上与溢流阀、顺序阀相区别的显著标志是 。

A. 没有远控口
B. 采用出口压力控制
C. 阀口常开
D. 阀芯有三个台肩

关于减压阀与溢流阀的区别,错误的说法是 。

A. 减压阀的出口接执行元件,溢流阀的出口接油箱
B. 减压阀采用出口压力控制,溢流阀采用进口压力控制
C. 减压阀阀口常开,溢流阀阀口常闭
D. 减压阀没有远控口,溢流阀由远控口

减压阀在 中应用较多。

A. 工作装置液压系统
B. 支腿系统
C. 夹紧系统
D. 控制系统
E. 润滑系统

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