【单选题】充足电状态下,蓄电池正极板上的活性物质是(),负极板上的活性物质为()。
【单选题】echo "hello"; The PHP script above contains a word hello, the word is called_____ by programmers
【单选题】Given the following script, why does the output come out as an empty line instead of "dog"()#!/bin/ksh $VAR=dog echo "${VAR}"
A.
The $VAR variable was not exported.
B.
The $VAR should have been set as VAR.
C.
dog needs double quotes around it when setting $VAR.
D.
The { } should not be around VAR in the echo command.
【单选题】在单件小批量生产中,用于指导生产的工艺文件通常采用( )。
【单选题】在单件小批量生产中,用于指导生产的工艺文件通常采用( )。
【简答题】分析以下代码是否存在XSS问题,如果存在如何解决。var text = '';
【单选题】echo "location='index.php'";代码的含义是:
B.
打印js代码,实现跳转到index.php页面。
C.
打印一段字符,输出到Index.php页面。