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A developer usestheAI capabilities provided by Harmony OS to achieve the following functions: 1. Perform text detection and recognition of image sources such as document remakes and street view reproductions, and provide translation, search and other related services based on the recognition results. 2. Convert various bills into image information by taking pictures, and then use text recognition technology to convert image information into character information that can be used by computers and other equipment. In order to implement the above functions, which of the following I capabilities is most likely to be used by the developer?

A.

Universal Character Recognition

B.

Text and image super-resolution

C.

Keyword extraction

D.

Part-of-speech annotation

HarmonyOS's AI capability provides the function of generating QR codes, for example, if you need to generate a QR code for each mobile phone contact, which of the following describes the QR code correctly?

A.

The width of the generated QR code image can be 2000 pixels

B.

The length of the string must be at least 2953 characters

C.

The height of the generated QR code image can be 1680 pixels

D.

Call the detect() method of IBarcodeDetector to generate the corresponding QR code image byte stream based on the input string information

Which of the following interfaces can repeatedly call a function with a fixed time delay between each call?

A.

setTimeout?

B.

setlnterval

C.

clearTimeout

D.

clearlnterval

A HarmonyOSuser downloads and installs a new app that has declared some non-sensitive permissions in the config.json file, and the app may involve some sensitive permissions during operation. Which of the following is correct in this scenario?

A.

For sensitive permissions that may be involved in the operation of the application, the authorization method is system authorization (system_grant)

B.

For the non-sensitive permissions declared by the application in the config.json file, the application will be dynamically applied for during use

C.

Non-sensitive permissions declared by the app in the config.json file are automatically granted when the user installs the app

D.

For the non-sensitive permissions declared by the app in the config.json file, the authorization method is user authorization (user_grant).

Which of the following scenarios does not use encoding technology?

A.

sound travels through twisted pairs

B.

Sound travels through rails

C.

Sound travels by radio

D.

Sound travels through optical fibers

If a developer wants to achieve the effect of page swiping in an application, which of the following components does the developer need to select?

A.

PageSlider

B.

ToastDialog

C.

webView

D.

ProgressBar

When a developer installs HAP (HarmonyOSAbility Package), what is the reason for the "STRING LENGTH ERROR" message?

A.

Signature information is not configured

B.

Package information exceeds the maximum length

C.

The device typeconfigured in config.json does not match the debugging device type

D.

The compilation and build plugin version does not match the Gradle version

In the Page Ability lifecycle of HarmonyOS, when the system creates a Page instance for the first time, which of the following callback methods will be triggered first?

A.

onStart()

B.

onActive()

C.

onInactive()

D.

onStop()

When the system destroys a page, which of the following callback methods will be triggered?

A.

onActive()

B.

onStart()

C.

onStop()

D.

onForeground()

In HarmonyOS application development, where can commonly used backgrounds, such as common text backgrounds and button backgrounds, be placed?

A.

graphic

B.

media

C.

layout

D.

element

Which option is not the process of decoding in the conversion of the following information?

A.

player plays music from the record

B.

Convert the data to audio

C.

Notebook plays video files from the hard drive

D.

Save the photo in digital form

A developer is developing an online education application, and there are multiple choice questions and multiple choice questions in the studentAnswer:interface, which of the following components is suitable for displaying multiple choice questions?

A.

Picker

B.

Checkbox

C.

RadioButton

D.

Switch