兔出血症的存活兔可检兔出血症病毒抗体,HI抗体高于()可判阳性,抗体具有保护性。A.

题型:单项选择题

问题:

兔出血症的存活兔可检兔出血症病毒抗体,HI抗体高于()可判阳性,抗体具有保护性。

A.1:1

B.1:10

C.1:100

D.1:1000

考点:生物学实验动物学实验动物学题库
题型:单项选择题

安放楔子的作用有()

A.有助于充填体邻面颈部的成形

B.防止形成悬突

C.稳固成形片

D.有助于恢复正常的邻接关系

E.以上均是

题型:单项选择题

阅读理解。

     During the summer holidays there will be a revised schedule of services for the students. Changes for

dining-room and library service hours and for bus schedules will be posted on the wall outside of the

dining-hall. Weekly film and concert schedules, which are being arranged, will be posted each Wednesday

outside of the student club.

    In the summer holidays, buses going to the town center will leave the main hall every hour on the half

hour during the day. The dining-room will serve three meals a day from 7:00 am to 7:00 pm during the

week and two meals from noon to 7:00 pm on weekends. The library will continue its usual hours during

the week, but have shorter hours on Saturdays and Sundays. The weekend hours are from noon to 5:00

pm.

    All students who want to use the library borrowing services must have a new summer card. This

announcement will also appear in the next week's student newspaper.

1. The main purpose of this announcement is to ________.

A. tell students of important schedule changes    

B. show the excellent services for students

C. tell students of new bus and library services    

D. ask students to renew their library cards

2. At which of the following times will the bus leave the main hall?

A.8:00, 9:00, 10:00, 11:00    

B.8:30, 9:30, 10:30, 11:30

C.8:30, 9:00, 9:30, 10:00      

D.8:00, 9:30, 11:00, 12:30

3. Times for films and concerts are not listed in this announcement because ________.

A.they are not to be announced    

B.the full list is not ready

C. they are hard to arrange        

D.the full list is too long

4. In the summer holidays, the library will have __________.

A. no special hours            

B. special hours on weekdays

C. special hours on weekends

D. special hours both on weekdays and weekends

5. We may infer that during the summer holidays ________.

A.The library will continue its usual hours on weekdays  

B.students will stay in the university

C.there will be a concert or film once a week  

D.no breakfast will be served on weekends

题型:单项选择题

假定你是中国银行的交易员,一客户打电话要3个月远期美元的报价,你的回答是“8.3122,8.3455”,客户要求买入1亿美元的远期合同。问:

如果到期日美元比上述汇率升值5%,你的收益情况如何

题型:单项选择题

非特异性脱敏疗法,下列可选用()

A.5%溴化钙

B.10%葡萄糖酸钙

C.苯海拉明

D.异丙嗪

E.维生素C

题型:单项选择题

(),犯罪嫌疑人可以聘请律师。

A.在侦查机关立案后

B.在侦查机关第一次讯问后

C.在侦查机关受理后

D.对犯罪嫌疑人采取强制措施之日起

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