问题 问答题 简答题

低压风管常采用漏光法检测系统的严密性,请简要解释漏光法检测的基本原理和方法。

答案

参考答案:

漏光法检测是利用光线对小孔的强穿透力,对系统风管严密程度进行检测的方法。

检测采用具有一定强度的安全光源。手持移动光源,可采用不低于100w的带保护罩的低压照明灯或其他低压光源。

检测时,光源可置于风管内侧或外测,但其相对侧应为暗黑环境。检测光源应沿被检接口部位与接缝缓慢移动,在另一侧观察,当发现有光线射出,则说明有明显漏风处。

阅读理解

Marilyn M.Arnold

4500 Ridgewood Road Memphis,Tennessee 38116

Tel:901­599­0316 E­mail:efg@yahoo.com

Objective

To obtain a position that will enable me to improve my organizational skills,educational background,and ability to work well with people.

Experience Lead Teacher La Petite Academy,Memphis,TN.

June,2011­July,2012

—Planned activities that would promote growth in language,social skills.

—Provided children with individual attention.

—Communicated with parents on a regular basis.

Education

At present,studying Science in Elementary Education at the University of Memphis.

Fahd EI Zoghat

American University of Beirut Tel:0096311­6820300 (Damascus) E­mail:abc@aub.edu.lb

Objective

To secure a promising position that offers both a challenge and a good opportunity for growth.

Experience 2010­2011

—Assisted a professor in the computer simulation(模拟) of digital circuits.

—Assisted an instructor in the area of radar systems.

—Worked as a research assistant with a professor in the area of digital image processing.

Education

Stanford University,Palo Alto,CA

Madeline Little

555 Maple Dr.Hartford,CT 06105 Tel:(860)555­0820 E­mail:m.e.little@gmail.com

Objective

To obtain a position as a Salesman Associate to improve the ability to work well with people in Summer.

Experience

September 2009­Present

—Aid students in person and via phone with questions regarding course registration.

—Assist with all other office administrative duties.

—Nominated(提名) for Employee of the Year in 2011 due to excellent performance.

2005­2008

—Teammate on Hartford High School women’s soccer team.

Education

ABC Community College Hartford,CT Bachelor of Arts

James Todd Wells

7444 Vesta Drive Little Rock,Arkansas.72210

Tel:(501)555­555 E­mail:jtwell@mail.net

Objective

To secure a position with a well­established organization with a stable environment that will lead to a lasting relationship.

Experience

2001­2011

—Worked in Cardiovascular Rehabilitation Unit Admissions of Outpatient Services at Hickingbotham Center admitting patients.Worked as liaison(联络) representative between family members and doctor.

—Worked also in Emergency Room admissions checking in patients.Entered personal data and followed up on insurance verification(核实).

Education

University of Arkansas at Little Rock,Little Rock,Arkansas

小题1:From the first part,we can learn that Marilyn M.Arnold ________.

A.knows about children’s education

B.wants to get a job with a stable environment

C.has got a degree of Science in Elementary Education

D.is an excellent teacher of the University of Memphis小题2:Which one may be short of independent working experience?

A.Marilyn M.Arnold.

B.Fahd EI Zoghat.

C.Madeline Little.

D.James Todd Wells.小题3:According to James Todd Wells’experience,he is most likely to be hired by ________.

A.a supermarket

B.a hotel

C.a hospital

D.a school小题4:What do the four people have in common?

A.They have received college education.

B.They want a permanent job.

C.They want to work with people.

D.They have rich working experience.

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