问题 问答题 简答题

前置泵何种情况下差压低?

答案

参考答案:

给水泵有前置泵进、出口差压低且流量低跳泵保护,前置泵在下列情况下差压低:

⑴前置泵(包括给水泵)出口流量低,前置泵汽化情况下。前置泵进口水接近饱和,容易汽化;

⑵前置泵流量过大情况下。流量过大,前置泵进出口压力自然低,且流量过大时容易汽化(汽蚀),更容易压力低。

阅读理解

Based on cultural traditions and the changing face of contemporary British communities, the Festival of Muslim Cultures joins young people from Muslim and non-Muslim backgrounds together through the creation of innovative(创新的), high quality cultural activities.

We have been working with arts and educational institutions across the UK to promote the mainstreaming of Muslim cultures within UK everyday life. The Festival was created out of the need to encourage a better understanding between Muslims and non-Muslims, to promote respect for Muslim cultures and to show how culture creates the pathways that connect us all together.

The program launched with a visit by the Festival’s patron(赞助人), the Prince of Wales, to the exhibition “Palace and Mosque” in Sheffield and since then there have been more than 100 events that have ranged from a Somali community day in Cardiff at the National Museum of Wales to a late-night Dance with Radio Tarifa (from Spain) and Dimi Mint Abba (form Mauritania) in the Royal Albert Hall and from a home-grown play in Nottingham about the Kashmir earthquake to the exhibition“Beyond the Palace Walls” at the Royal Museum Edinburgh of Islamic art from the Hermitage Museum, St Petersburg.

We are now working on a number of long-term projects which stay true to our commitment to promoting Muslim cultures through arts collaborations(协作) and build on the extensive network of local, national and international partners that Festival has created. These include a three-year national program that connects young Muslims to their local cultural institutions; a UK Muslim cookbook; an exhibition of the Ottoman architect Sinan; and a project for schools around the 1000-year old story “The Animals’ Lawsuit against Humanity”.

For more information about the Festival, please click on another page: Who’s Who.

小题1:The best title of this passage would be _______.

A.Welcome to the Celebration of Muslim Cultures

B.The History and Development of Muslim Cultures

C.The Exhibition of “Beyond the Palace Walls”

D.New Ways to Connect Muslims to Local Cultures小题2:Which is NOT the purpose of holding the Festival of Muslim Cultures?

A.To promote people’s respect for Muslim cultures.

B.To show to people how cultures join the people together.

C.To try to change the beliefs of various religions.

D.To make Muslims and non-Muslims understand each other better.小题3:This passage was probably taken from _________.

A.a website

B.a newspaper

C.a book

D.a magazine

单项选择题