● The "rolling wave" or "moving window" concept is used most frequently on projects where:
A The baseline is frozen for the duration of the project and no scope changes are permitted
B Marketing is unsure of what the customer actually wants and reserves the right to make major scope changes
C The low levels of the work breakdown structure are known with certainty for the next three to six months, but the remaining tasks are based upon the results of the first three to six months of work
D Networking techniques are not appropriate
E All of the above
第1题:
某企业职工关系EMP(E_no,E_name,DEPT,E_addr,E_tel)中的属性分别表示职工号、姓名、部门、地址和电话;经费关系FUNDS(E_no,E_limit,E_used)中的属性分别表示职工号、总经费金额和己花费金额。若要查询部门为"开发部"且职工号为"03015"的职工姓名及其经费余额,则相应的SQL语句应为: SELECT(60) FROM(61) WHERE(62)
A.EMP.E_no,E_limit-E_used
B.EMP.E_name,E_used-E_limit
C.EMP.E_no,E_used-E_limit
D.EMP.E_name,E_limit-E_used
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第6题:
A sentence is a () concept, and the meaning of a sentence is often studied in isolation.
Apragmatic
Bgrammatical
Cmental
Dconceptual