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【单选题】
树的后根遍历序列等同于该树对应的二的( )。A.
先序序列
B.
中序序列
C.
后序序列
D.
以上都不对
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反馈参考答案：
举一反三
【单选题】检查 PLC系统( )中的第一个和最后一个节点处是否连接了终端电阻,以保证 CCLink 网络的通信质量。
A.
I/O 模块
B.
扩展模块
C.
系统配置
D.
组建网络
【简答题】{ Complete the following summary with the words from the passage. The first latter of each missing word is given for your reference. Jazz has its 1) r____in the American 2) f____traditions. It origina...
【简答题】Complete the summary below with words from the text on P. 67 of the textbook(资源库教材电子版67页). Use NO MORE THEN THREE WORDS for each answer.
【简答题】Write a summary according to the following part in less than 100 words. The conception of poverty and what to do about it have changed over the decades. Under Social darwinism the lazy and the ineffic...
【单选题】Choose the best summary of the passage.
A.
1 Churchill became Prime Minister in 1940 because King George VI believed that he had the confidence of the nation. Churchill won the war, but lost the general election afterwards.
B.
2 Churchill had a successful military career. He became Prime Minister because he won the most important battle in Britain’s history. He is considered the greatest Briton because his personality sums up the nation.
C.
3 Churchill came from a famous family and was a soldier and politician. When Churchill became Prime Minister in 1940, Britain was at war. Churchill made speeches that inspired the nation, and led the country to victory. Although he was considered a great military leader, Churchill lost the general election after the war.
【简答题】vt. 假装;掩饰;隐瞒 n. 伪装;假装;用作伪装的东西
【简答题】某轴系结构,由一根轴、一个齿轮和一个普通平键组成,齿轮通过平键进行周向固定,问共有 个零件和 个构件。
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