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【单选题】
DSC设备中的检错方式不是采用:A.
十单元7/3码进行水平方向检错
B.
七单元恒比码
C.
采用二重时间分集方式发送
D.
采用垂直校验符
拍照语音搜题，微信中搜索"皮皮学"使用
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【简答题】Leaders like John F. Kennedy and Martin Luther King have made important contributions to the people of the United States. Name another world leader you think is important. Give specific reasons for yo...
【单选题】Which American president was at the same time period with Martin Luther King Jr.?
A.
John Kennedy
B.
Abraham Lincoln
C.
George Washington
D.
Ronald Reagan
【简答题】卷的注意事项有哪些?卷的种类
【单选题】John Martin trusted people easily because
A.
he was good-hearted and liked to cooperate with other people in his work.
B.
he was hardly aware of the possible danger.
C.
he was at a loss for the fact that industrial spying was on the increase.
【单选题】______ was known for his famous speech '1 Have a Dream'.
A.
John F. Kennedy
B.
Martin Luther King, Jr
C.
Abraham Lincoln
D.
Thomas Jefferson
【简答题】What is the purpose of Martin Blade's visit?
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