plc test questions

the text in uppercase letters?Your answer: text-transform:uppercaseCorrect answer: text-transform:capitalize15. How do I change the font of an element?Your answer: font-family:16. How do I make the text bold?Your answer: font-weight:bold17. How to display a border: Top 10 pixels, bottom border 5 pixels, left border 20 pixels, right border 1 pixels?Your answer: border-width:10px 1px 5px 20px18. How do I change the left margin of an element?Your answer: margin-left:19. Determine if the following

question No.Flips the order of the words in the sentence.Title : Enter an English sentence, flipping the order of the words in the sentence, but the order of the characters within the word is unchanged. Words are separated by a null character in a sentence. For simplicity, punctuation is treated like ordinary letters.For example , enter "I am a student." , the output"student. A am I ". Idea: Start by flipping the entire sentence by character, then flipping each word in the sentence by character#

JS title: In JavaScript () methods you can sort the array elements.A. Add ()B. Join ()C. Sort ()D. Length ()Answer: Http://hovertree.com/tiku/bjaf/5v9ps30o.htm JS title: In the following regular expression () can match the first is a lowercase letter, the other digits are lowercase letters or a number of the minimum two-bit string.A./^\w{2,}$/B./^[a-z][a-z0-9]+$/C./^[a-z0-9]+$/D./^[a-z]\d+$Answer: http://hovertree.com/tiku/bjaf/mo8ayuia.htm CSS title: How to set the English first letter capitali

Phpadmin and Dreamweaver Test SQL instructions in Chinese display as question mark questions, please php+mysql expert answers

View object in the activity. The OnDraw () method of the view is automatically called.2. Use multithreading and do not use double bufferingIn this case, the new thread needs to be opened, and the newly opened thread will not have access to the View object. Forced access will be error: android.view.viewroot$ calledfromwrongthreadexception:only theoriginal thread that created a view hierarchy can touch its views.At this point you need to create a subclass that inherits the Android.os.handler and

-operatorThe non-operator is denoted by the symbol "~", and its Operation law is as follows:If the bit is 0, the result is 1, if the bit is 1, the result is 0, see a simple example below.public class Data15{public static void Main (string[] args){int a=2;SYSTEM.OUT.PRINTLN ("A non-result is:" + (~a));}}4. Xor operatorThe XOR operator is denoted by the symbol "^", and its Operation law is:The two operand bits, the same result is 0, and the result is 1. Let's look at a simple example.public class

Directory 1 Problem Description 2 Solutions 1 problem description Problem DescriptionXiaoming has been thinking of such a strange and interesting question these days:How many 1~n are there in one of the full permutations of the series? The definition of the number of intervals mentioned here is:If all the elements in the interval [L, R] (that is, the first l to the r elements of this arrangement) are incremented, a "continuous" sequence of lengths of R-l+1 is obtained, which is call

) { account + + money; }NBSP ; } } class Newthread Impleme NTS Runnable { private Bank bank; Public Newthread (Bank) { This.bank = bank; } @Override public void Run () {nbsp for (int i = 0; i Common methods for ThreadLocal ThreadLocal (): Creating a thread local variable get (): returns this The value in the current thread copy of the thread local variable initialvalue (): Returns the current thread's "initial value" set (T

Nine Chapters count judges Net-original websitehttp://www.jiuzhang.com/problem/34/TopicsThere is a 01 string consisting of only 0 and 1, where the longest substring is found, making the number of 0 and 1 in the substring equalAnswerIf 0 is considered as 1, then the substring we are looking for is the longest and the substring of 0. The problem of this seed string summation is generally solved by prefix and method. With Sum[i] representing the number of the first I and, the problem of the model c

owns the lock gets the lock again, then the fetch counter increases by 1, and then the lock needs to be freed two times to get a true release. This mimics the semantics of synchronized; If a thread enters a synchronized block that is protected by a monitor that the thread already owns, it allows the thread to continue and does not release the lock when the thread exits the second (or subsequent) synchronized block. The lock is released only when the thread exits the first synchronized block tha

. Statement 1 and 3 fails to compileC. Statement 3 and 4 fails to compile D. statment 2 fails to compileE. statment 3 and 4 fails to compile7. Consider the following code:struct mystruct{ int foo () {return1class myclass{ intreturn2int x = S.foo (); // int y = C.foo (); // Statement2Circle one answer below which is true of the above code.A. Statement 1 would cause a compilation error B. Statement 2 would cause a compilation errorC. Both statement would compilation successfully

similarities and differences between JSP and servlet?JSP is the extension of servlet technology, is essentially a simple way of servlet, JSP more emphasis on the application of the appearance of expression, compiled is "class servlet." The main difference between Servlets and JSPs is that the application logic of the servlet is in the Java file and is completely detached from the HTML in the presentation layer, whereas the JSP case is that Java and HTML can be combined into a file with a. jsp e

instability or even crashes, The GC mechanism provided by Java can automatically monitor whether an object exceeds the scope to achieve the purpose of automatically reclaiming memory, and the Java language does not provide an explicit way to dispose of the allocated memory.20. Write a singleton mode (Singleton)//第一种 ：饿汉模式public class SingleTon{ private SingleTon(){} //实例化放在静态代码块里可提高程序的执行效率，但也可能占用更大的空间 private final static SingleTon instance = new SingleTon(); public static SingleTon

address of the variable or object pointed to); 7. Pointer and reference self-increment (+ +) operation has different meanings;4. Write a function to determine whether the system is big-endian or small-end way?5. Define a 128-bit shaped class Int28, and implement a function that determines whether a Int128 is a prime number6. An ordinary binary tree is known, and a function is written to transform the binary tree from the normal binary tree to the search fork.7. List the IPC you know8. Enumerate

start the text in uppercase letters?Correct answer: text-transform:capitalize15. How do I change the font of an element?Correct answer: font-family:16. How do I make the text bold?Correct answer: Font-weight:bold17. How to display a border: Top 10 pixels, bottom border 5 pixels, left border 20 pixels, right border 1 pixels?Correct answer: border-width:10px 1px 5px 20px18. How do I change the left margin of an element?Correct answer: margin-left:19. Determine if the following statement is correc

The OB segment----the elastic phase. As long as the tensile force is removed, the deformation of the specimen will disappear completely. The BC segment----yielding phase. This phase of stress remains constant, but the strain increases significantly and the deformation is not recoverable. CE segment----hardening phase. This phase of material restores the ability to resist deformation and must be increased in order to deform it. The EF segment----The local deformation stage. In a certain local r

Tags: command line change log Linux kernel MSF blog Security Info TopicExperimental one topicNmap with Metasploit for port scanningProblemHow does Nmap cooperate with Metasploit for port scanning?ReplyHere Nmap with Metasploit for port scanning refers to the MSF command line in Metasploit, called Nmap for port scanning.Experiment two topicsBuffer Overflow Vulnerability ExperimentProblemThe stack changes before and after calling BOF () in the vulnerability program?Reply20179209 "Linux kernel Prin