In a HarmonyOS application, which of thefollowing and the ComponentContainer object are actually composed of the interface elements that the user sees?

If a developer uses the DevEco Studio tool for application development, which of the following commissioning methods does the tool support?

When a developer needs to specify the exact coordinates of the x-axis and y-axis of a sub-component when laying out a component, which layout can be used to achieve this function?

When an engineer develops an application and needs to add the function of extracting videos, which of the following interfaces should be called?

Which of the following interfaces is NOT an API provided by the preference?