B737飞机共有几个紧急滑梯() A.2个 B.3个 C.4个

题型:单项选择题

问题:

B737飞机共有几个紧急滑梯()

A.2个

B.3个

C.4个

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题型:单项选择题

E

任务型读写

Directions : Read the following text and choose the most suitable heading from A---E for each paragraph. 

A. Classroom participation

B. Differences in American university education

C. Examination system

D. Competition among students

E. Honest policy in students' school work

F. (AB) Students' responsibility for learning

56                

There is considerable variety in university classrooms in the United States. Because of diverse teaching methods and non-standardized curricula (课程), no two courses are the same.    Undergraduate courses are considerable different from graduate courses. The classroom atmosphere in expensive, private universities may differ from that in community colleges, which are free and open to everyone.

57                

Participation in the classroom is not only accepted but also expected of the student in many courses. Some professors base part of the final grade on the student's oral participation. Although there are formal lectures during which the student has a passive role (i.e., listening and taking notes), many courses are organized around classroom discussions, student questions, and informal lectures.

58                

Many teachers believe that the responsibility for learning lies with the student. (Courses are not designed merely for students to pass exams.) The ideal student is considered to be one who is motivated to learn for the sake of learning, not the one interested only in getting high grades.

59                

Ideally, the teacher-student relationship at universities is characterized by trust. Thus, cheating on tests, Plagiarizing (抄袭) in written work, presenting other's ideas as original, and turning in homework completed by someone else are all prohibited (禁止).

60                 

Relationships between students in the classroom can be cooperative or competitive. International students should not hesitate to ask for help if it is needed. in classes where such a grading curve is used, students may be reluctant to share lecture notes or information for fear that their own grades will suffer.

题型:单项选择题

男性,70岁,慢性咳嗽、咳痰20余年,每年持续3~4个月,近2~3年出现活动后气短,有时双下肢水肿。今日晨起突感左上胸针刺样疼痛,与呼吸有关,继之出现呼吸困难、大汗,不能平卧,来院就诊。

目前内科处理的首要措施是

A.使用洋地黄控制心室率

B.使用强有效的镇痛剂

C.强力利尿剂降低血容量

D.静脉用药控制血压,β阻断剂控制心室率

题型:单项选择题

对于OptiX网络,一个ECC子网在保证通信性能的前提下最多允许互连的网元数目是()。

A.48;

B.64;

C.80;

D.96。

题型:单项选择题

计算控件的控件源必须是以( )开头的一个计算表达式。

A.“=”

B.“!”

C.“”

D.“≈”

题型:单项选择题

下游坝壳的水下部位以及上游坝壳的水位变动区内则要求坝壳料具有的性能是()。

A.防渗性能

B.排水性能

C.反滤

D.维稳

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