With regard to the characteristics of @State state data, the following description is incorrect

State is decorated with a variable that is the internal state data of the component, and when the state data is modified, the build method of the component will be called to refresh the UI.
Properties marked as @State are private variables that can only be accessed within the component
@State variable can be left without an initial value
The decorated variables @Link
child components can be bidirectionally bound to the @State variables of the parent component

Answer(s): C

Regarding the position setting of the Tabs component tab, the following is the wrong description

When barPosition is set to Start (the default value) and the vertical attribute is false (the default value), the tab is located at the top of the container
If barPosition is set to Start (the default value) and the vertical attribute is set to true, the tab is located on the left side of the container
When barPosition is set to End and vertical is set to false (the default), the tab is located at the bottom of the container
When barPosition is set to End and vertical is set to true, the tab is located at the bottom of the container

Answer(s): D

Regarding the boot mode of UIAbility, the following statement is incorrect

UIAbility supports three launch modes: single-instance, standard-mode, and specified instance, which can be configured in module.json via launchType.
singleton is a single-instance mode, only one instance exists in the system, and if it already exists, the only instance in the system is reused.
standard is the standard mode, and a new instance will be started every time startAbility, and the system defaults to the standard mode.
specified is the specified instance mode, and the internal business of Ability decides whether to create multiple instances during runtime.

Answer(s): C

With regard to Web components, the following is incorrect

WebController can control various behaviors of web components, such as forward, backward, runJavaScript, etc.
The web component supports the setting of various properties such as fileAccess.javaScriptAccess, for example, .javaScriptAccess(true) indicates that JavaScript scripts are allowed to be executed.
The web component supports a variety of events, such as onConfirm and onConsole, for example, the onConfirm callback is triggered when a web page calls confirm().
The ohos.permission.INTERNET permission is required to access both online and offline web pages using the web component.

Answer(s): D

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