[多选] A developer chooses to avoid using SingleThreadModel but wants to ensure that data is updated in a thread-safe manner. Which two can support this design goal？（）

A . Store the data in a vocal variable.
B . Store the data in an instance variable.
C . Store the data in the HttpSession object.
D . Store the data in the ServletContext object.
E . Store the data in the ServletRequest object.

《特种设备安全监察条例》是由（）颁发的质监局。国务院。人大常委。下表是某商场服装部销售利润表。若该表格已经输入到Excel表中，一起在Excel完成以下任务。请写出G2单元格的公式，该公式计算一月份服装平均利润，并且能复制到G3：G4计算出其他月份服装的平均利润。阈值备份文件的扩展名通常为（）。 bkf。 reg。 bak。 tm。乌台诗案 A developer chooses to avoid using SingleThreadModel but wants to ensure that data is updated in a thread-safe manner. Which two can support this design goal？（）

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[多选] A developer chooses to avoid using SingleThreadModel but wants to ensure that data is updated in a thread-safe manner. Which two can support this design goal？（）

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