【简答题】【消耗次数:1】
Translate the following sentence into ChineseToday the quality of our natural environment has become an important issue.
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相关题目
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【单选题】 Pop music is such an important part of society [] it has even influenced our language.
①  as
②  that
③  which
④  where
【简答题】 Translate the following sentence into ChineseProfessor Zhou was committed to the cause of language teaching all his life.
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随机题目
【判断题】 将二进制数110000化为十进制是48,十六进制为30,化为八进制为60。
①  正确
②  错误
【判断题】 机床支承件采用横向隔板来加强其抗弯刚度。()
①  正确
②  错误
【单选题】 有关资源分配图中存在环路和死锁关系正确的说法是()
①  图中无环路则系统可能存在死锁
②  图中有环路则系统肯定存在死锁
③  图中有环路则系统可能存在死锁,也可能不存在死锁
④  以上说法都不对
【判断题】 将二进制数110001化为十进制是49,十六进制为31,化为八进制为61。
①  正确
②  错误
【单选题】 双端口存储器所以能进行高速读/写操作,是因为采用______。
①  高速芯片
②  新型器件
③  流水技术
④  两套相互独立的读写电路
【单选题】 若下列字符码末位为校验位且无数据错,其中采用奇校验的字符码是______。
①  11011011
②  11110110
③  11001001
④  11001011
【判断题】 推力轴承置于主轴后端用于轴向精度要求高的精密机床。()
①  正确
②  错误
【判断题】 十六进制数0F1H表示的十进制正数表示为241,表示的十进制负数表示为-15,十进制数255转换为BCD码表示为001001010101。
①  正确
②  错误
【判断题】 若系统中存在一个循环等待的进程集合,则必定会死锁。()
①  正确
②  错误
【单选题】 进程所请求的一次打印输出结束后,将使进程状态从()
①  运行态变为就绪态
②  运行态变为等待态
③  就绪态变为运行态
④  等待态变为就绪态