－－－－ Hi, Kate.What is your plan for this week end? －－－－ I ( ) Hangzhou. A.go toB.am going toC.am go toD.am to
－－－－ Hi, Kate.What is your plan for this week end? －－－－ I ( ) Hangzhou.
A.go to
B.am going to
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–Hi. I’m your neighbor. My name is Steve Edwin.–(). A、What are you from?B、Oh.C、Yes, I know.D、Hi. It’s good to see you. I’m Jane Peterson.
7． Hi! This is_______ new teacher．__________ name is Linda．A． your; MyB． his; YourC． your ; HerD． her; His
When introducing yourself to someone you don't know at a party, what would you say?()A、Hi, I'm**B、May I introduce myself to you and at the same time I make your acquaintance?C、Hi, I'd like to meet you.D、Hi, I'm .Do you know many people here?
Youhavecreatedaresourceplan，DAY.Youexecutethefollowingcode：SQLBEGINDBMS_RESOURCE_MANAGER.CREATE_SIMPLE_DIRECTIVE（PLAN=’DAY’，COMMENT=’DEPARTMENTSPLAN’，GROUP_OR_SUBPLAN=’DEPARTMENTS’，CPU_P1=0）；END；Then，youissuethefollowingcode：SQLBEGINDBMS_RESOURCE_MANAGER.CREATE_SIMPLE_DIRECTIVE（PLAN=’DAY’，COMMENT=’DEPARTMENTSPLAN’，GROUP_OR_SUBPLAN=’DEVELOPERS’，CPU_P2=100）；END；Whatwillbetheimpactofexecutingtheabovecode？（）
以下程序的输出结果是 ( ) enum weekday {sun＝7，mon＝1，tue，wed，thu，fri，sat}； main( ) { enum weekday workday，week_end； int i，a [8]； workday＝tue； week end=sun； pritnf("\ntuesday＝%d sunday＝%d"， wotkday， week_end)； workday＝sun+tue； week_end＝(enum weekday)3； printf ("tuesday＝%d sunday＝%d"， workday week_end)； a[sun]＝sun； a[mon]＝mon a[tue]＝tue； a[wed]＝wed； a[thu]＝thu； a[fri]＝fr； a[sat]＝sat； for(i=1;i＜7；i+ +) printf("%d"，a [i])； }A．tuesday＝2 sunday＝7；tuesday＝2 sunday＝7；1 2 3 4 5 6 7B．tuesday＝2 sunday＝7；tuesday＝9 sunday＝3；1 2 3 4 5 6 7C．tuesday＝0 sunday＝7；tuesday＝2 sunday＝3；1 2 3 4 5 6 7D．tuesday＝1 sunday＝2；tuesday＝3 sunday＝4；1 2 3 4 5 6 7
用氢卤酸分解酚醚时，是HI还是HBr好？为什么？A．HBr好，因为HBr比HI酸性强，Br-亲核能力I-强。B．HBr好，因为HBr比HI酸性弱，Br-亲核能力I-弱。C．HI好，因为HI比HBr酸性强，I-亲核能力比Br-强。D．HI好，因为HI比HBr酸性弱，I-亲核能力比Br-弱。
下列代码运行时不会产生错误的是？A．print 'Hi, I'm fine'B．print "Hi, I'm fine"C．print 'Hi, I'm fine"D．print "Hi, I'm fine'
已知关系R（H,I,J,K,L,M,N),函数依赖集F为{ HI→JM,HK→JL,HN→I,K→J,I→K },问:F的最小覆盖为_________。A．{ HI→M,HK→J,HN→I,K→J,I→K}B．{ HI→M,HK→L,HN→I,K→J,I→K}C．{ HI→J,HI→F,HK→J,HK→L,HN→I,I→K,K→J}D．{ H→M,I→M,HK→L,H→I,N→I,K→J,I→K}
10、用氢卤酸分解酚醚时，是HI还是HBr好？为什么？A．HBr好，因为HBr比HI酸性强，Br-亲核能力I-强。B．HBr好，因为HBr比HI酸性弱，Br-亲核能力I-弱。C．HI好，因为HI比HBr酸性强，I-亲核能力比Br-强。D．HI好，因为HI比HBr酸性弱，I-亲核能力比Br-弱。