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Beijing University of Aeronautics and Astronautics computer department postgraduate review computer real questions and answers --- first-level Construction Engineer real questions Question 1: factorial. Enter a positive integer. when outputting, output the number itself, followed by a comma, and then output the factorial and equal signs of the numbers, The calculation result of the factorial and determine whether the factorial and are equal to the ori

Please give answers! Fc11 partition-general Linux technology-Linux technology and application information. For more information, see the following section. I want to know a few questions: 1. the/usr partition is used to install the software. Is it necessary to separate it into one partition? If I have installed the software after I reinstall the system, can I still use it? Is it necessary to keep this partition? If I want to install oracle, how much

= "Video/ogg"> TrackKind= "Subtitles"label= "中文版"src= "T_EN.VTT"Srclang= "en"default> Track> TrackKind= "Subtitles"label= "Arabic"src= "T_AR.VTT"Srclang= "AR"> Track>Video>4. What media labels are available in addition to audio and VIDEO,HTML5?HTML5 provides strong support for multimedia, with the following tags supported in addition to audio and video tags:typesrc= "Test.mov">5. What is the use of HTML5 Canvas elements?The Canvas element is used to draw a graphic on a Web page, and th

); },10); The previous code allows the settimeout loop to trigger. However, the execution of this block of code suspends the time, so two execution times are greater than 10 milliseconds SetInterval (function () { /* code block */ },10); And the previous code, is automatically in 10 when the event hangs, so two times the interval of the event will be less than or equal to 10 milliseconds.When a thread is blocked at an event, either using SetInterval or settimeout waits f

difference between a green thread and a local thread in Java? 2) What is the difference between threads and processes? 3) What is context switching in multi-threading? 4) What is the difference between a deadlock and a live lock, the difference between a deadlock and a pie? 5) What is the thread scheduling algorithm used in Java? 6) What is thread scheduling in Java? 7) How do you handle non-catching exceptions in the thread? 8) What is a thread group and why is it n

applications. The serial collector is sufficient for most small applications, which require about 100M of memory on modern processors.41. In Java, when can objects be garbage collected?This object can be recycled when the object becomes inaccessible to applications that currently use the object.Is there a garbage collection in the permanent generation of 42.JVM?Garbage collection does not occur in a permanent generation, and if it is permanently full or exceeds the threshold, a full GC is trigg

expands its own new method? is through the type of prototype this property.Only function has the prototype attribute.Like what: 123456 functionPerson(){}Person.prototype.say=function(){alert(‘hello‘);};//人这种类型有打招呼的方法varp1=newPerson();var p2=newPerson();p1.say();//hellop2.say();//hello In this way, all instances can be greeted with a method.When we create a new type of "man". If you want to inherit the person. Just like this: 1234567891011 functionM

the two tags, 115. What does the implied object mean? What are the hidden objects?JSP implied objects are some Java objects in the page, and the JSP container allows these Java objects to be used by developers. Developers can use them directly without a clear statement. JSP implicit objects are also called predefined variables. The following lists the implied objects in the JSP page: Application Page Request Response Session exception Out Config PageCont

=0, pre-check=0 ');//if not added, IE will prompt the target host cannot access Header(' Pragma:public ');//if not added, IE will prompt the target host cannot access Header("Content-length:".)filesize($path)); Header("Content-disposition:attachment; Filename=$name"); $fp=fopen($src, ' RB '); Fpassthru($fp); fclose($fp); if(file_exists($path)){//and delete the picture . unlink($path); Exit; }} ?>Pro-Test, Chrome and Firefox are fine. But there is a bug under IE, ask Daniel pointi

business objects and control logic with control inversion. It also allows binding of request parameters and business objects in a declarative manner. DispatcherservletThe Spring MVC Framework is designed around Dispatcherservlet to handle all HTTP requests and responses. WebapplicationcontextWebapplicationcontext inherits ApplicationContext and adds some unique features to the Web application that are different from the general ApplicationContext because it handles the subject and finds the

(retryexec.java:86) ~[httpclient-4.3.3.jar:4.3.3]At Org.apache.http.impl.execchain.RedirectExec.execute (redirectexec.java:108) ~[httpclient-4.3.3.jar:4.3.3]At Org.apache.http.impl.client.InternalHttpClient.doExecute (internalhttpclient.java:186) ~[httpclient-4.3.3.jar : 4.3.3]At Org.apache.http.impl.client.CloseableHttpClient.execute (closeablehttpclient.java:82) ~[httpclient-4.3.3.jar : 4.3.3]At Org.apache.http.impl.client.CloseableHttpClient.execute (closeablehttpclient.java:106) ~[httpclien

When I was studying the third chapter of Ingenious Wxpython, I encountered a little doubt, that is, what is the difference between the following statementExample 3.1 4th, 5 lines:panel = WX. Panel (self,-1) "Close", pos= (130, 15), Example 3.3 10th, 11 lines:Self.panel = wx. Panel (self) = wx. Button (Self.panel, label="Not over"Why is the self method defined in the second example?So we're going to modify part of the code 3.3 to the firs

(Address Resolution Protocol)12. What are the IP address encoding components? Answer: an IP address consists of a network number and a host number. However, it is only after bitwise AND top-up with the "subnet mask" that the network bit and host bit are distinguished.13. The user inputs the M and N values. The number of sequential loops starts from 1 to n. This value is output on every count to m until all are output. Write the C program (Joseph's ring problem ). Answer: Circular linked list, w

() {Int C; While (C = getchar ())! = '\ N ′) Switch (c-'2 ′) {Case 0: Case 1: putchar (C + 4); break; Case 2: putchar (C + 4); break; Case 3: putchar (C + 3); break; Default: putchar (C + 2); break; } Printf ("\ n ″); } Runtime input: 2473, output result:Reference answer: 6897 VC ++ 6.0 tested25:Use two stacks to implement a queue function?Reference answer: set two stacks to A, B, and 1.StartAll are empty. Enter the team:Push new elements into stack a; release:(1) judge whether stack

For help, 100,000 in urgent need! Online answers! Development and Application of VCL Components Http://www.delphi2007.net/DelphiVCL/html/delphi_20061226132901108.html Dbgrid1 has the following records: Idgp10gp12gp45gp20rf20fr20ot20 091111 0911010110 090000 In dbgrid2, the sum of data in each column in dbgrid1 is required. Idgp10gp12gp45gp20rf20fr20ot20 10 12 1 11 111 How can we get the sum of each column of dbgrid1? Please advise! You can use SQ

to crash. No primary reference is optional and cannot be set to nil. No primary reference is also implicitly parsed. 18. How to Use semicolons Semicolons are optional in swift, but for the sake of ease of use, Apple recommends that you do not use semicolons any more. However, you may still use semicolons in swift, for example, in loop statements. for var index = 0; index 19. How will swift develop? Currently, SWIFT is only the first version. Apple has a very clear purpose and they will up

1. invalid: 6_05 (cannot begin with a number) A $ ($ is an invalid symbol ). 2. mybook (openbook, closebook, readbook, takebook, putbook ). 3. [mybook takebook]; [Mybook openbook]; [Mybook readbook]; [Mybook closebook]; [Mybook putbook]; 4. [myboat driver]; [Mymotorcycle driver]; [Mycar driver]; Overlap. 5. Ease and reduce the memory (I understand that the question is not too clear ). 6. Understand the advantages and disadvantages of Procedural language and object-oriented language. 7. // ------

Question details There are n Children standing in a row (numbers from 0 to n-1). Each child has a rating value, which is stored in the ratings array. The teacher needs to allocate candy to them. Each child needs at least one candy. For any two adjacent children, I and I + 1, the value of rating must be smaller than the value of rating. The value of rating must be equal to the value of rating ). Calculate the minimum number of sweets required to complete the allocation. Input Format: Multiple gr

for the question for many times, however, this rock cannot be placed in my heart. ······ The official Red Hat documents were highlighted at last. Https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html-single/6.5_Technical_Notes/ kernelComponent Typically, on platforms with no intelligent platform management interface (IPMI) hardware the user can see the following message the on the boot console and inDmesgLog:CouldnotsetupI/OspaceThis message can be safely ignored, unl

Question 1: "There are two doors in front of you, one of which contains hidden treasures, but if you accidentally break into another door, you can only die slowly ......".There are two people behind these two doors. Both of them know which door has a treasure and which one is good at death. But the two men only tell the truth, one person speaks only false words. Who tells the truth? It depends on whether you have the intelligence to find out. The game rule is that you can only ask one question t