交际的目的是什么？
Which code determines the int value foo closest to， but not greater than， a double value bar？（） [" Int foo = （int） Math.max（bar）；"," Int foo = （int） Math.min（bar）；"," Int foo = （int） Math.abs（bar）；"," Int foo = （int） Math.ceil（bar）；"," Int foo = （int） Math.floor（bar）；"," Int foo = （int） Math.round（bar）；"]
如何使用资料维护终端通过街名查询资料（） ["登陆系统进入菜单","选择查询菜单，选择单用户查询菜单项，输入街道名称，单击“查找”","查询出正确结果","点击打印设置，根据情况选择纸张设置，打印资料"]
金属在干燥条件下或理想环境中不会发生腐蚀。
Which statement is true？（） [" A flow layout can be used to position a component that should resize horizontally when the container is resized."," A grid layout can be used to position a component tat should maintain a constant size even when the container is resized."," A border layout can be used to position component that should maintain a constant size even when the container is resized."," The grid bag layout can be used to give a grid-like layout which differs from the normal grid in that individual rows and columns can have unique sizes."," If two components are placed in the same column of a grid bag layout， and one component resizes horizontally， then the other component must resize horizontally."]
果酸在果胶软糖制造过程中起着怎样的作用？
