On the basis of the supported input events, HarmonyOS's multi-dimensional input defines some input actions commonly used by users as a set of standardized events, maps the input events of different input devices to the standardized events, and can obtain a unified experience when using multiple input devices to operate different terminal devices or applications.

A developer has developed a news browsing application, and the news list page is displayed by default when the application is opened, which of the following methods does the developer use to achieve this function?

The log content filtered by a developer through relevant information is:
01-2016:08:36.908
23597/com.example.myapplication W
00201/MY TAG:Failed to visit,reason:503.
Which of the following cannot be obtained by analyzing the log?

When a HarmonyOS developer makes an FA call to PA, the callAbility interface returns the error "Internal ability not register.", which of the following points needs to be checked correctly?

When a programmer develops an online education application, the student ping interface has multiple choice questions and multiple choice questions, which of the following components is suitable for displaying multiple choice questions?