第1题:
A.No one
B.Nothing
C.Not one
D.None
第2题:
A.SELECT UNIQUE dept FROM staff
B.SELECT DISTINCT dept FROM staff
C.SELECT (dept) UNIQUE FROM staff
D.SELECT (dept) DISTINCT FROM staff
第3题:
A.used to printing
B.is used to print
C.is used to printing
D.used to print
第4题:
SQL*Loader reads a set of records from a file, generates INSERT commands, and passes them to the Oracle kernel. Oracle then finds places for those records in free blocks in the table and updates any associated indexes. Which SQL*Loader mode is used in this scenario?()
第5题:
第6题:
● In requirements engineering,requirements elicitation is the practice of collecting the requirements of a system from users,customers and other stakeholder. In the following practices,__(73)__is rarely used in requirements elicitation.
(73)A.brain storming B.interview
C.questionnaire D.Monte Carlo analysis
第7题:
Steam smoke will occur when ______.
A.extremely cold air from shore passes over warmer water
B.warm dry air from shore passes over cooler water
C.cold ocean water evaporates into warm air
D.cool rain passes through a warm air mass
第8题:
A. clear
B. much clearer
C. more clearer
D. the clearest
第9题:
第10题:
Which of the following statements eliminates all but one of each set of duplicate rows in the DEPT column in the STAFF table?()