【单选题】【消耗次数:1】
Lucy has been a student there for nearly one and [填空] half years.
a
an
the
/
参考答案:
复制
纠错
相关题目
【单选题】 The professor has been [填空]at the university for over thirty years.
①  teach
②  taught
③  teaching
④  will teach
【单选题】 Tom has been a vegetarian ____ principle for years.
①  in
②  on
③  for
④  by
【判断题】 He has been in china for three years.
①  正确
②  错误
【判断题】 The population of beijing has been increased for ten years.
①  正确
②  错误
【单选题】 he park has been built and it will be open _____ three years
①  A. in
②  B.for
③  C.on
④  D.after
【单选题】 He has been there, [填空]?
①  hasnt he
②  has he
③  does he
④  doesnt he
【单选题】 This technology has been ?around for a long time, but not until recent years _______ it in marketing.
①  businesses employed
②  did businesses employ
③  businesses had employed?
④  had businesses employed
【单选题】 He said that his sister ?[填空]been there one week before
①  had
②  has
③  have
④  will have
【单选题】 He has been to Beijing . So [填空] I.
①  have
②  does
③  do
④  did
【判断题】 Lucy and Lily is both in Class One.
①  正确
②  错误
随机题目
【单选题】 以下列管式热交换器中,产生温差应力的是( )。
①  填料函式热交换器
②  浮头式热交换器
③  U形管式
④  固定管板式热交换器
【单选题】 对管束和壳体温差不大,壳程物料较干净的场合可选( )换热器。
①  固定管板式
②  U型管式
③  浮头式
④  套管式
【单选题】 下列不属于泵维护的项目是()。
①  定期清洗
②  长期停车要检查
③  长期停车即可,不需要操作
④  检查遥控是否灵活
【单选题】 调整压缩机的余隙时,打开余隙阀上的旁通阀能使( )压力平衡。
①  压缩缸与余隙缸
②  余隙活塞两边
③  余隙缸与大气
④  压缩活塞两边的气缸
【单选题】 对称平衡式压缩机,相邻两列曲柄错角为( )。
①  180°
②  90°
③  270°
④  60°
【单选题】 在压缩机中等温压缩所需的功( )。
①  不确定
②  最大
③  中间
④  最小
【单选题】 气压机组油站的冷油器管程介质为( ),壳程介质为( )。
①  水、润滑油
②  水、水
③  润滑油、润滑油
④  润滑油、水
【单选题】 为了保障人生安全,在正常的情况下,电气设备的安全电压规定为( )V以下。
①  12
②  48
③  36
④  24
【单选题】 下列( )化工设备的代号是S。
①  换热器
②  反应釜
③  液氨球罐
④  过滤器
【单选题】 某容器内的压力为1MPa,为了测量它,应用下列哪一量程的压力表( )。
①  0-1.6MPa
②  0-4.0MPa
③  0-1MPa
④  0-2.5MPa