A、Giving
B、Given
C、Give
第1题:
What's ( )job? Are ( ) British?
A. your, your
B. you, your
C. your, you
第2题:
Youexecutedthefollowingcommands:SQL>ALTERSESSIONSETOPTIMIZER_USE_PENDING_STATISTICS=false;SQL>EXECUTEDBMS_STATS.SET_TABLE_PREFS(’SH’,’CUSTOMERS’,’PUBLISH’,’false’);SQL>EXECUTEDBMS_STATS.GATHER_TABLE_STATS(’SH’,’CUSTOMERS’);WhichstatementiscorrectregardingtheabovestatisticscollectionontheSH.CUSTOMERStableintheabovesession?()
A.Thestatisticsarestoredinthependingstatisticstableinthedatadictionary.
B.Thestatisticsaretreatedasthecurrentstatisticsbytheoptimizerforallsessions.
C.Thestatisticsaretreatedasthecurrentstatisticsbytheoptimizerforthecurrentsessionsonly.
D.Thestatisticsaretemporaryandusedbytheoptimizerforallsessionsuntilthissessionterminates.
第3题:
第4题:
One reason is that banks must ________ customers, who will switch to another bank if they are not satisfied.
A、compete for
B、compete against
C、compete with
D、compete in
第5题:
第6题: