多项选择题
A.System.load("prop.custom");
B.System.getenv("prop.custom");
C.System.property("prop.custom");
D.System.getProperty("prop.custom");
E.System.getProperties().getProperty("prop.custom");
单项选择题 Given: What is the result?（）
多项选择题 A developer is creating a class Book, that needs to access class Paper. The Paper class is deployed in a JAR named myLib.jar. Which three, taken independently, will allow the developer to use the Paper class while compiling the Book class?（）
多项选择题 Click the Exhibit button. Which three code fragments, added individually at line 29, produce the output 100?（）
