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【简答题】
Leider muss ich Ihnen _______, ich bin anderer Meinung.
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【单选题】数据链路层在物理层提供比特流传输服务的基础上在通信的实体之间建立数据链路连接,传送的数据单元是
A.
比特(bit)
B.
帧(frame)
C.
分组(packet)
D.
报文(message)
【单选题】I just couldn't understand the former mayor ________ the money raised for children in poor areas.
A.
taking
B.
to take
C.
being taken
D.
to be taken
【单选题】数据链路层在物理层提供比特流传输服务的基础上,在通信的实体之间建立数据链路链接,传输的数据单元是
A.
比特
B.
C.
分组
D.
报文
【单选题】The speaker raised his voice but still couldn’t make himself__________ .
A.
hear
B.
to hear
C.
hearing
D.
heard
【判断题】Form 10-K must be filed with the SEC whenever a public company experiences a significant event.
A.
正确
B.
错误
【单选题】I don’t know________made Gong Li become an outstanding superstar at home and abroad.
A.
what was it that
B.
what it was that
C.
that was it what
D.
that it was what
【单选题】He raised his voice, ______ we still couldn’t hear anything.
A.
so
B.
or
C.
but
D.
as
【判断题】数据链接路层传输的数据单元是报文。 ( )
A.
正确
B.
错误
【简答题】阅读理解 Some rain must fall.For many people in the world today those rainy days take the form of financial problems. If you have found yourself in such a position,  you may be wondering what you should d...
【单选题】下列测力传感器中,属于发电型测力传感器的是( )
A.
自感式传感器
B.
磁电感应式传感器
C.
电容式传感器
D.
应变式传感器
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