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【单选题】
外伤致肱骨中下1/3骨折合并垂腕垂指畸形2天,该患者最适合哪项治疗
A.
复位后夹板固定
B.
复位后,石膏固定
C.
牵引治疗
D.
手术切开复位,内固定
E.
手法复位后,夹板或石膏固定,观察23个月,伸腕伸指不见恢复,再手术治疗
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【单选题】放大电路若要增大输出电阻,应该引入:
A.
电压负反馈
B.
电流负反馈
C.
串联负反馈
D.
并联负反馈
【单选题】They have opportunities to learn from professors they()would not be able to access.
A.
therefore
B.
or
C.
otherwise
【单选题】Many engineering professors may not have time to prepare material for class discussion on professional ethics.
A.
Right
B.
Wrong
C.
Not mentioned
【单选题】要稳定输出电压,增大输入电阻,应该引入的负反馈类型是
A.
电压串联负反馈
B.
电压并联负反馈
C.
电流串联负反馈
D.
电流并联负反馈
【单选题】The passage implies that ______.
A.
different professors have different approaches to lecturing
B.
the purpose of a lecture is to impart information
C.
senior students do not attend as many lectures as freshmen
D.
a wide variety of subjects are covered in lectures
【简答题】某放大器想要增大输入电阻,则应该引入( )负反馈;某放大器想要减小输入电阻,则应该引入( )负反馈;
【简答题】Some senior professors have asked to retire so as to _______________ (为……腾出空间) the younger and more promising teachers.
【单选题】要增大输入电阻而减小输出电阻,应该引入( )负反馈。
A.
串联电压
B.
串联电流
C.
并联电压
D.
并联电流
【单选题】In a distance learning course, one
A.
does not have to see the professors.
B.
also needs to take exams.
C.
reduces the learning expenses.
D.
must revise the schedule to attend the course.
【单选题】Several engineering professors have quit from teaching to protest against the creation of a new course in engineering ethics.
A.
Right
B.
Wrong
C.
Not mentioned
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