It ______ 12 rabbits to test a sample of vaccine, now it takes only 6.A. used to takingB. used to takeC. is used to takeD. was used to
It ______ 12 rabbits to test a sample of vaccine, now it takes only 6.
A. used to taking
B. used to take
C. is used to take
D. was used to
相关考题：
Standard "Shewhart" control charts assume that the distribution of sample means is:A . uniformB . normalC . discreteD . symmetricalE . B and D only
Since RAM is only active when the computer is on, your computer uses disk to store information even when the computer is off. Which of the following is true?(74).A．When your computer is on, only RAM is used to store information.B．When your computer is on, only disk drives are used to store information.C．When your computer is off, only RAM is used to store information.D．When your computer is off, only disk drives are used to store information.
One of our customers takes ( ) in the model 123, and we would like to receive a sample and quotation. A.prideB.pleasureC.interestD.consideration
He _____ to school by bus, but now he goes to school on foot.A. used to goingB. used to goC. is used to goingD. is used to go
使用VC6打开考生文件夹下的工程test13_1，此工程包含一个源程序文件test13_1.cpp，但该程序运行有问题，请改正程序中的错误，使该程序的输出结果如下：n=2n=5n=7源程序文件test13_1清单如下：include＜iostream.h＞class Sample{int n；public：/*************** found ************+***/Sample()Sample(int i){n=i；}/***************** found ********+**********/void add(Sample s1，Sample s2)/***************** found ****************/{this.n=s1-＞n+s2.n；}void disp(){cout＜＜"n="＜＜n＜＜endl；}}；void main(){Sample s1(2)，s2(5)，s3；s3.add(s1，s2)；s1.disp()；s2.disp()；s3.disp()；}
Given:11. public void go(int x) {Which statement is true?() A.All of the assert statements are used appropriately.B.Only the assert statement on line 12 is used appropriately.C.Only the assert statement on line 15 is used appropriately.D.Only the assert statement on line 18 is used appropriately.E.Only the assert statements on lines 12 and 15 are used appropriately.F.Only the assert statements on lines 12 and 18 are used appropriately.G.Only the assert statements on lines 15 and 18 are used appropriately.
使用VC6打开考生文件夹下的工程test12_1，此工程包含一个源程序文件test_12.cpp，但该程序运行有问题，请改正程序中的错误，使该程序的输出结果如下：fun (Sample p) 1 2fun (Sample *p) 3 420 10源程序文件test12_1清单如下：include＜iostream .h＞class Sample{private：int x，y；static int z；public：Sample(int a，int b){ x=a；y=b； }void fun(Sample p)；void fun(Sample *p)；static void print(Sample s)；}；/*************** found ***************/int z=10；void Sample：：fun(Sample p){x=p.K；y=p.y；cout＜＜"fun(Sample p)"＜＜" "＜＜x＜＜" "＜＜y＜＜endl；}void Sample：：fun(Sample *p){/************** found **************/x=p.x； y=p.y；cout＜＜"fun(Sample *p) "＜＜" '＜＜x＜＜" "＜＜y＜＜endl；}void Sample：：print (Sample s){/*************** found *****************/x=20；cout＜＜s. x＜＜" "＜＜z＜＜endl；}void main(){Sample p(1，2)，q(3，4)；p. fun(p)；p. fun(q)；p. print(p)；}
A user copied files from a CD and now the files can only be opened as read－only. Which of the following utilities can be used to allow the user the ability to edit the files?() A.EDITB.CHMODC.ATTRIBD.CONVERT
An administrator needs to apply a Technology Level update. During the preview install, the output indicates that there is insufficientspace in the /usr filesystem. Review of the root volume group indicates there are no available physical partitions, but the /test jfs2 filesystem is only 8% used.What is the most efficient method to use the available space in the /test filesystem to apply theupdate?（）A.Use chfs to reduce the /test filesystemB.Use cplv to copy the /test filesystem to a smaller logical volumeC.Use migratepv l to move the /test filesystem to a different volume groupD.Backup the /test filesystem, remove it, and recreate it with a smaller size
（ ）Her son __________ Coke, but now he __________ milk.A．used to drink；is used to drinkingB．used to drinking；drinksC．is used to drinking；used to drinkD．is used to drink；is drinking
● Since RAM is only active when the computer is on, your computer uses disto store information even when the computer is off. Which of the following itrue? （74）（74）A．When your computer is on, only RAM is used to store informationB．When your computer is on, only disk drives are used to storinformation.C．When your computer is off, only RAM is used to store informationD．When your computer is off, only disk drives are used to storinformation.
All wire rope used in shipboard cargo gear must be identified and described in a certificate. The certificate shall certify all of the following EXCEPT the ______.A.date of the testB.load at which a test sample brokeC.name of the vesselD.number of strands and of wires in each strand
Which two statements are true about the hashCode method？（）A、 The hashCode method for a given class can be used to test for object equality and object inequality for that class.B、 The hashCode method is used by the java.util.SortedSet collection class to order theelements within that set.C、 The hashCode method for a given class can be used to test for object inequality， but NOT object equality， for that class.D、 The only important characteristic of the values returned by a hashCode method is that the distribution of values must follow a Gaussian distribution.E、 The hashCode method is used by the java.util.HashSet collection class to group the elements within that set into hash buckets for swift retrieval.
End users are failing to log in to the network. Which command is used on the ERX Edge Router to validate communications with the RADIUS server?（）A、test ppp aaaB、test aaa pppC、test radius userD、test user radius
Hemp rope rots easily when it is wet. So it is now used only for “small stuff” such as （）.A、mooring and lashing ropesB、seizing and serving ropesC、cargo-handling and seizing ropesD、wooden ropes
A user copied files from a CD and now the files can only be opened as read-only. Which of the following utilities can be used to allow the user the ability to edit the files?（）A、EDITB、CHMODC、ATTRIBD、CONVERT
A system administrator used the savevg command to back up the testvg each night. There is now a requirement to exclude the /test/static filesystem from the backup. How can this be accomplished？（）A、Use the -X flag on the savevg commandB、Put an entry in the /etc/exclude.testvg fileC、Remove the /test/static entries from the /vgdata/testvg.data fileD、Use the touch command to create /test/static/.exclude before using savevg
which one of the following accurately describes field names?（）A、they must be unique in a database B、they can only be used once in a view C、they can only used once on each form D、they can be used mulriple times on a form
An administrator needs to apply a Technology Level update. During the preview install， the output indicates that there is insufficient space in the /usr filesystem. Review of the root volume group indicates there are no available physical partitions， but the /test jfs2 filesystem is only 8% used. What is the most efficient method to use the available space in the /test filesystem to apply the update？（）A、Use chfs to reduce the /test filesystemB、Use cplv to copy the /test filesystem to a smaller logical volumeC、Use migratepv l to move the /test filesystem to a different volume groupD、Backup the /test filesystem， remove it， and recreate it with a smaller size
The EMPLOYEES table is stored in the SAMPLE tablespace. The corresponding IPK_EMP index for the EMPLOYEES table’s primary key is stored in the INDX tablespace. Out of 12 partitions， only partition P1 of the SALES table is stored in the SAMPLE tablespace. Which object will be exported by this command？（） exp system/manager tablespaces=SAMPLEA、Only the EMPLOYEES table.B、Only the EMPLOYEES table and its corresponding primary key index.C、The EMPLOYEES table and partition P1.D、The EMPLOYEES table， IPK_EMP index， and the SALES table.
单选题Freon 12 which is used to produce intense cold is normally a （） when at atmospheric pressure and temperature.AliquidBgasCsolidDwater only
单选题This machine （）out of order very often, but now it works well.Ais used to beBwas used to beCused to beDwas used to
多选题Which two statements are true about the hashCode method？（）AThe hashCode method for a given class can be used to test for object equality and object inequality for that class.BThe hashCode method is used by the java.util.SortedSet collection class to order theelements within that set.CThe hashCode method for a given class can be used to test for object inequality， but NOT object equality， for that class.DThe only important characteristic of the values returned by a hashCode method is that the distribution of values must follow a Gaussian distribution.EThe hashCode method is used by the java.util.HashSet collection class to group the elements within that set into hash buckets for swift retrieval.
单选题SPSS软件中，完成两个独立总体均值是否相等的假设检验的操作是（）AAnalyze→Compare Means→One-Sample T TestBAnalyze→Compare Means→Independent-Sample T TestCAnalyze→Compare Means→Paired-Sample T TestDAnalyze→Nonparametric Test→Binominal
单选题It takes at least five to ten years______it is possible to test this medicine on human patients.AbeforeBsinceCafterDwhen
单选题All wire rope used in shipboard cargo gear must be identified and described in a certificate. The certificate shall certify all of the following EXCEPT the（）.Adate of the testBload at which a test sample brokeCname of the vesselDnumber of strands and of wires in each strand