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【单选题】
世界上第一条地下铁道( )年在英国伦敦建成通车。
A.
1683
B.
1863
C.
1368
D.
1963
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举一反三
【单选题】Sally has a busy ________, so she has much ________ to do every day. A. work; work B. job; work C. job; job D. work; job
A.
work work
B.
job work
C.
job job
D.
work job
【单选题】This is _____ interesting _____. [     ]
A.
an; job
B.
an; work
C.
a; job
D.
a; work
【判断题】促销的目的是与顾客建立良好的关系
A.
正确
B.
错误
【单选题】_______ show the data or information flow within an information system; the data is traced from its origin through processing, storage, and output.
A.
Top-down analysis methods
B.
Data flow diagrams
C.
System flow charts
D.
Grid charts
【判断题】促销的目的是与顾客建立良好的关系。
A.
正确
B.
错误
【单选题】( ) are four elements of data flow diagram.
A.
process, data flow, data store, external entity
B.
process, data flow, data table, entity
C.
process, data arrow, data table, entity
D.
process, data flow, relationship, external entity
【单选题】胸部X线片示肺野清晰的先心病是
A.
房间隔缺损
B.
室间隔缺损
C.
Roger病
D.
动脉导管未闭
E.
法洛四联症
【单选题】Processes on a data flow diagram:
A.
transform incoming data into outgoing information.
B.
represent the system boundaries.
C.
represent the work that a specific user performs.
D.
change the nature of the relationships on an entity-relationship diagram.
【单选题】I have a _____ , I _______ at a TV station.
A.
work,work        
B.
job,job            
C.
job,work
【单选题】Do you have a _____?--- Yes, I _____ at a clothes shop.
A.
work, work
B.
work, job
C.
job, job,
D.
job, work.
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