单选题Which built-in returns a BOOLEAN value that indicated whether an objects internal ID is available?()A GET_ID B ID_NULL C ID_FIND D FIND_ID

题目
单选题
Which built-in returns a BOOLEAN value that indicated whether an objects internal ID is available?()
A

GET_ID 

B

ID_NULL 

C

ID_FIND 

D

FIND_ID

参考答案和解析
正确答案: A
解析: 暂无解析
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