50 A. clean B. read. C. turn D. count
50 A. clean B. read. C. turn D. count
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Please don’t forget ________ the room while I am away in Beijing.A. clean B. to clean C. cleaned D. cleaning
25. --- The light in the office is still on.--- Oh, I forgot to ______.A. turn it offB. turn it on C. turn it up D. turn it down
Which are correct when you do CPR? () A. Never stops until help comesB. Turn the head to the side and clean the vomitingC. Ensure the environment is safe enough before CPR startsD. Do the CPR for children in the same way as for adults
编译如下Java程序片断:classtest{intcount=9;publicvoida(){intcount=10;System.out.println(count1=+count）；}publicvoidcount（）{System.out.println（count2=+count）；}publicstaticvoidmain（Stringargs[]）{testt=newtest（）；t.a（）；t.count（）；}}结果将（）。A.不能通过编译B.输出： count1=10 count2=9C.输出：count1=9 count2=9
编译如下的Java程序片段：Classtest{Intcount=9；Publicvoida（）{Intcount=10；System.out，println（count1=”+count）；}Publicvoidcount（）{System.out.println（count2=”+count）；}Publicstaticvoidmain（Stringargs[]）{Testt=newTest（）；t.a（）；t.count（）；}}结果是（）A.不能通过编译B.输出：count1=10count2=9C.输出：count1=9count2=9
She had to_______ the room after the Children’s party. A. clean outB. clean upC. clean downD. clean oil
● 下面 C 程序中，设变量 count 的地址为 2000。则该段程序执行后，屏幕上的显示结果应为 （53） 。# include stdio.hmain(void){ int count,q;int *m;count = 100;m = count;q = *m;printf(“q=%d;\n”,q);return 0;}（53）A. q=2000;B. q=2000C. q=100;D. q=100
——Mary, you clean the room today, ?——But I cleaned it yesterday. It’s Lily’s turn.A、don’t youB、will youC、do youD、didn’t you
Fordebuggingpurposes，youneedtorecordhowmanytimesagivenJSPisinvokedbeforetheuser’ssessionhasbeencreated.TheJSP’sdestroymethodstoresthisinformationtoadatabase.WhichJSPcodesnippetkeepstrackofthiscountforthelifetimeoftheJSPpage？（）A.%!intcount=0；%%if（request.getSession（false）==null）count++；%B.%@intcount=0；%.%if（request.getSession（false）==null）count++；%C.%intcount=0；.if（request.getSession（false）==null）count++；%D.%@intcount=0；.if（request.getSession（false）==null）count++；%E.%!intcount=0；.if（request.getSession（false）==null）count++；%
The CUSTOMERS table has these columns:CUSTOMER_ID NUMBER (4) NOT NULLCUSTOMER_NAME VARCHAR2 (100) NOT NULLSTREET_ADDRESS VARCHAR2 (150)CITY_ADDRESS VARHCAR2 (50)STATE_ADDRESS VARCHAR2 (50)PROVINCE_ADDRESS VARCHAR2 (50)COUNTRY_ADDRESS VARCHAR2 (50)POSTAL_CODE VARCHAR2 (12)CUSTOMER_PHONE VARCHAR2 (20)The CUSTOMER_ID column is the primary key for the table.You need to determine how dispersed your customer base is.Which expression finds the number of different countries represented in the CUSTOMERS table?（）A. COUNT(UPPER(country_address))B. COUNT(DIFF(UPPER(country_address)))C. COUNT(UNIQUE(UPPER(country_address)))D. COUNT DISTINTC UPPER(country_address)E. COUNT(DISTINTC (UPPER(country_address)))
(2)A.=COUNT(E3:E10,>=60)和=COUNT(E3:E10,=60")和=COUNT(E3:E10," （2）A．=COUNT(E3:E10,＞=60)和=COUNT(E3:E10,＜60)B．=COUNT(E3:E10,"＞=60")和=COUNT(E3:E10,"＜60")C．=COUNTIF(E3:E10,＞=60)和=COUNTIF(E3:E10,＜60)D．=COUNTIF(E3:E10,"＞=60")和=COUNTIF(E3:E10,"＜60")
有如下4个语句： ①count＜＜'A'＜＜setfill('x')＜＜left＜＜setw(7)＜＜'B'＜＜endl； ②count＜＜setfill('x')＜＜left＜＜setw(7)＜＜'A'＜＜'B'＜＜endl； ③count＜＜'A'＜＜setfill('*')＜＜right＜＜setw(7)＜＜'B'＜＜endl； ④count＜＜setfill('x')＜＜right＜＜setw(7)＜＜'A'＜＜'B'＜＜endl； 其中能显示A * * * * * * B的是A．①和③B．①和④C．②和③D．②和④
● 对于下图所示的 Students和 SC 关系，属性 Sno 表示学号，Sname 表示姓名，Sex表示性别，SD表示专业，Age 表示年龄，Cno 表示课程号，Grade 表示成绩。a. 当用户查询“选了课程 2 的学生数”时，其结果应为 （59） ；当 Students 和 SC关系进行自然连接时，其结果集的属性列数应为 （60） 。（59）A. 3 B. 4 C. 6 D. 7（60）A. 6 B. 7 C. 8 D. 9b. 查询“至少选修了两门课程的每个学生的平均成绩”的 SQL 语句如下：SELECT Sno， （61）FROM SCGROUP BY Sno（62） 1；（61）A. GradeB. SUM（Grade）/ 7C. AVG（Grade）D. SUM（Grade）/ COUNT（Cno）（62）A. WHERE COUNT（Sno）B. WHERE COUNT（DISTINCT（Sno） ）C. HAVING COUNT（Sno）D. HAVING COUNT（DISTINCT（Sno） ）
______A.=COUNT(E3:E10,>=60)和=COUNT(E3:E10,=60")和=COUNT(E3:E10," ______A．=COUNT(E3:E10,＞=60)和=COUNT(E3:E10,＜60)B．=COUNT(E3:E10,"＞=60")和=COUNT(E3:E10,"＜60")C．=COUNTIF(E3:E10,＞=60)和=COUNTIF(E3:E10,＜60)D．=COUNTIF(E3:E10,"＞=60")和=COUNTIF(E3:E10,"＜60")A．B．C．D．
Do remember to ______ the light when you leave the room. A. turn up B. turn on C. turn off D. turn down
Before any machinery is put in operation，you should ______.A.ventilate all compartments，see that the machinery is clean and there are no obstructionsB.just turn the key and start upC.take for granted that there are no fuel leaksD.assume there are no volatile fumes in the engine space
在Excel中，关于COUNT函数与COUNTA函数，以下叙述正确的有（ ）。A. COUNT函数统计数值单元的个数，COUNTA函数统计非空单元格个数B. 引起COUNT和COUNTA函数值不同的是含有空的单元格C. 引用区域中有数值、字符和空单元格时，COUNT与COUNTA函数的计算结果不同D. 引用区域中只有数值和空单元，COUNT与COUNTA函数的计算结果相同
汉译英：“毛重；净重；公重”，正确的翻译为：（ ）。A. gross weight ； clean weight; dry weight B. total weight; clean weight ； dry weightC. gross weight ； net weight ； conditioned weight D. total weight ； net weight ； conditioned weight
A technician has a laptop that is running slow and notices the fan is on high. Which of the following should the technician try FIRST?（）A、Clean the heatsink assembly of debris.B、Turn the fan off when the AC adapter is attached.C、Turn the fan to low in the BIOS.D、Replace the processor and fan.
单选题Before any machinery is put in operation，you should（）.Aventilate all compartments，see that the machinery is clean and there are no obstructionsBjust turn the key and start upCtake for granted that there are no fuel leaksDassume there are no volatile fumes in the engine space