多选题Which of the following is designed to guarantee that once data is written it cannot be modified?（）AFlashBDLT4 tapesCCD-RDSDLT tapesEWORM
题目
多选题
Which of the following is designed to guarantee that once data is written it cannot be modified?（）
A
Flash
B
DLT4 tapes
C
CD-R
D
SDLT tapes
E
WORM