Businesses can use free samples to build rapport and()customers()products or services.A、 engage inB、 engage…toC、 engage…for
Businesses can use free samples to build rapport and()customers()products or services.
A、 engage in
B、 engage…to
C、 engage…for
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Whichofthefollowingisthecorrectcollectionofbuildevents?() A.Pre-Build，Post-Link，andPre-LinkB.Pre-Build，Post-Build，andPost-LinkC.Pre-Build，Pre-Link，andPost-BuildD.Post-Link，Pre-Link，andPost-Build
Youexecutedthefollowingcommands：SQLALTERSESSIONSETOPTIMIZER_USE_PENDING_STATISTICS=false；SQLEXECUTEDBMS_STATS.SET_TABLE_PREFS（’SH’，’CUSTOMERS’，’PUBLISH’，’false’）；SQLEXECUTEDBMS_STATS.GATHER_TABLE_STATS（’SH’，’CUSTOMERS’）；WhichstatementiscorrectregardingtheabovestatisticscollectionontheSH.CUSTOMERStableintheabovesession？（）A.Thestatisticsarestoredinthependingstatisticstableinthedatadictionary.B.Thestatisticsaretreatedasthecurrentstatisticsbytheoptimizerforallsessions.C.Thestatisticsaretreatedasthecurrentstatisticsbytheoptimizerforthecurrentsessionsonly.D.Thestatisticsaretemporaryandusedbytheoptimizerforallsessionsuntilthissessionterminates.
On your Oracle Database, you issue the following commands to create indexes:SQL CREATE INDEX oe.ord_customer_ix1 ON oe.orders (customer_id, sales_rep_id) INVISIBLE;SQL CREATE BITMAP INDEX oe.ord_customer_ix2 ON oe.orders (customer_id, sales_rep_id);Which two statements are true?（）A. Only the ORD_CUSTOMER_IX1 index created.B. Both the indexes are updated when a row is inserted, updated, or deleted in the ORDERS table.C. Both the indexes are created: however, only ORD_CUSTOMERS_IX1 is used by the optimizer for queries on the ORDERS table.D. The ORD_CUSTOMER_IX1 index is not used by the optimizer even when the OPTIMIZER_USE_INVISIBLE_INDEXES parameters is set to true.E. Both the indexes are created and used by the optimizer for queries on the ORDERS table.F. Both the indexes are created: however, only ORD_CUSTOMERS_IX2 is used by the optimizer for queries on the ORDERS table.
According to Harry Morrison, businesses .A．will benefit from cutting carbon emissionsB．should buy carbon allowances for shoppersC．are required to make up for their carbon emissionsD．have encouraged shoppers to take their custom elsewhere
写出以下程序的执行结果 #include＜iostream.h＞ class Sample { int n; public: Sample（int i){n=i;} friend int add（Sample s1,Sample s2); }; int add（Sample s1,Sample s2){return s1.n+s2.n;} void main（) { Sample s1（10),s2（20); cout＜＜add（s1,s2)＜＜endl; }
就理发而言，人们购买的是“服务”，而不是“产品”（）In hair cutting, what people bought is a "service" rather than "products"（）