偏航系统:机舱的偏航是(),它是根据()提供的风向信号,由,实现风电机组叶轮与风向保

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问题:

偏航系统:机舱的偏航是(),它是根据()提供的风向信号,由,实现风电机组叶轮与风向保持一致,最大效率的吸收风能。

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2011年8月12日,第26届世界大学生夏季运动会在中国深圳举行,中国军团夺金第一人柔道选手秦茜在13日夺得中国军团首枚金牌。下列对大运会金牌认识正确的是    (  )

①大运会金牌如果用于交换,就会变成商品 

②大运会金牌作为货币,具有流通手段的职能 

③大运会金牌从奖牌角度看则不是商品 

④如果进入市场交换,则大运会金牌的价格可以通过拍卖形成其市场价格

A.②③④

B.①②③

C.①②④

D.①③④

题型:填空题

皮亚杰认为心理发展来源于( )。

A.成熟

B.经验

C.主体的动作

D.平衡

E.图式

题型:填空题

阅读理解

     Japanese high school students either walk or ride bicycles if the distance is not too great. In other

cases, students must take public buses and trains. After junior high school, students attend schools

based on their high school entrance examination scores. So some students travel a great distance to

attend the school.

     ________

     The school day begins at 8:30. Then students assemble in their homeroom classes for the day's

studies. Each homeroom has an average of 40-45 students. Students stay in their homeroom classrooms

for most of the school day. Only for physical education, laboratory classes, or other subjects requiring

special facilities(设备) do students move to different parts of the school. Between classes and at

lunchtime, classrooms can be noisy, lively places. Some schools may have a cafeteria(自助餐厅), but

most do not. In most schools, students bring a box lunch from home, prepared by the mother in the early

morning hours.

     Japanese students spend 240 days a year at school, 60 days more than American students. Students

in high schools take three years' each of the following subjects mathematics, social studies, Japanese,

science, and English. Other subjects include physical education, music, art, and moral(道德的) studies.

All the students in one grade level study the same subjects. Given the number of required subjects,

electives(选修科目) are few.

     Afterschool Activities

      Club activities take place after school every day. Students can join only one club, and they rarely

change clubs from year to year, so the clubs are relatively stable. Clubs are made up of sports clubs

(baseball, soccer, judo, kendo, etc.) and culture clubs(English, broadcasting, science, etc.). New

students usually are encouraged to select a club shortly after the school year begins in April. Clubs

meet for two hours after school each day and many clubs continue to meet during school vacations.

1. Most Japanese high school students often have their lunch________.

A. in restaurants  

B. in school cafeterias

C. at home    

D. in homeroom classrooms

2. Students in the USA go to school________days a year.

A. 180  

B. 200  

C. 240  

D. 300

3. The underlined word "rarely" in the fourth paragraph means "________".

A. always 

B. never  

C. seldom  

D. often

4. From the passage we know that________.

A. there are less than 40 students in each class in Japanese high schools

B. students must stay in homeroom classrooms for physical education

C. there are few subjects for students to choose except the required ones

D. there will not be any club activities during school vacations

5. The best subtitle for the second and third paragraphs may be "________".

A. At school  

B. In class

C. Subjects  

D. Homerooms

题型:填空题

煤层的坚固性系数f≤0.5不容易发生突出。

题型:填空题

耳是哪个脏腑寄窍()

A.心

B.肝

C.胆

D.肾

E.肺

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