对单元机组，正常运行时，汽轮机负荷增加，锅炉运行工况不变，分析哪些测量值发生变化？
题型：问答题 简答题
问题：
对单元机组，正常运行时，汽轮机负荷增加，锅炉运行工况不变，分析哪些测量值发生变化？
题型：问答题 简答题
阅读理解。
Upcoming Kids & Youth Events
The Race to Space
Date: February 27, 2012
Does life exist in outer space? How can we tell? In 1970
the first robot landed on the moon, and then,
scientists have created different kinds of machines to move around planets to help us answer our space
question. Come learn more about their interesting history.
Fee: $10 for adults and children over 1 year old. Under 1 year old FREE. $9 for older people.
Museum Hours: Tuesday through Sunday, 10:00am ~ 7:00pm. Closed Monday.
Where: Long Island Children's Museum, 11 Davis Ave, Garden City, NY
Learn and Play
Date: February 28~March 2, 2012
Fun at the farm for preschoolers. Programs by Cornell Cooperative Extension educators are parent-child
interactive (互动的). Includes story, snack and animal visits. Ages 24~60 months.
Two periods available: 10:30 am~11:30 am or 1:00 pm~ 2:00 pm. $10 per child. Please call or visit our
website for additional information.
Where: Suffolk Country Farm and Education Center, 350 Yaphank Ave (County Road 21), Yaphank,
NY
Arctic Animals for Preschoolers
Date: March 13, 2012
Time: 10:00am~12:00 noon
Explore the frozen world of creatures that call the Arctic and Antarctic home with a Cornell Cooperative
Extension educator. How do they do it? Prepare warm clothes.
Ages 3~5 (with an adult). $25 per child (includes one adult, each additional adult $ 5)
Where: Sport Fishing Education Center, Ocean Parkway, Babylon, NY
Usdan Center Open House
Date: March 31, 2012
Time: 11:00am~2:00pm
Usdan Center for the Creative and Performing Arts, one of America's largest not-for-profit(非盈利的)
summer arts camps, named a "Best Of for 2010", is now preparing for its 44th season, FREE admission.
Open houses will give students and their families a chance to tour the center and get information on Usdan's more than 40 programs - including music, dance, theater, writing, nature and chess.
Where: 185 Colonial Springs Road, Wheatley Heights, NY
1. How much does it cost if your grandparents bring you to Children's Museum after school?
A. $29.
B. $28.
C. $18.
D. $10.
2. In what way do you learn and play in Suffolk County Farm and Education Center?
A. Parents and children work together.
B. Children are asked to work on the farm.
C. Animals can be taken home to be raised.
D. Educators lead children to visit the farm.
3. What is the special feature of Sudan Center Open House?
A. You may go there all day.
B. You need register in advance.
C. You can go to the camp for free.
D. You are asked to show your art talent.
4. On Monday, you cannot go to .
A. Usdan Center Open House
B. Sport Fishing Education Center
C. Suffolk County Farm and Education Center
D. Long Island Children's Museum
5. We can learn from the events that .
A. the events last from February to May
B. children should be with at least two adults
C. visiting Sport Fishing Education Center, you must prepare warm clothes
D. you can learn space knowledge in Usdan Center Open House