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【单选题】
用来记数的符号叫“数字”世界各大文明都曾创造过“数字”,有的现代已经不再使用,有的只用于特定的场合。右图钟表盘面上表示时间的数字,使用的是( )。A.
希腊数字
B.
罗马数字
C.
阿拉伯数字
D.
巴比伦数字
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【简答题】转向器是转向系统的( )装置,目前在汽车上广泛应用的转向器主要有齿轮齿条式和( )等几种。
【简答题】在数据处理技术发展过程中,数据独立性最高的阶段是________
【单选题】Which one is not the significance of household contract responsibility system?
A.
It has liberated the rural productivity and motivated peasants to work harder.
B.
It helped to separate a large amount of rural labor force from land cultivation.
C.
It helped peasants to change into commodity producers and managers.
D.
It was affected by the foreign large-scaled agricultural production mode.
【简答题】典型的液力变矩器由哪三个元件组成:泵轮、 、导轮
【单选题】Which one is not the significance of household contract responsibility system?
A.
It has liberated the rural productivity and motivated peasants to work harder. liberated the rural productivity and motivated peasants to work harder. It has liberated the rural productivity and motivated peasants to work harder.
B.
It helped to separate a large amount of rural labor force from land cultivation. It helped to separate a large amount of rural labor force from land cultivation.
C.
It helped peasants to change into commodity producers and managers.
D.
It was affected by the foreign large-scaled agricultural production mode It was affected by the foreign large-scaled agricultural production mode.
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