A、Damage to the equipment.B、The man’s wrong operation.C、The line upgrading.D、

游客2023-08-06 49

问题

选项 A、Damage to the equipment.
B、The man’s wrong operation.
C、The line upgrading.
D、It was unclear.

答案 C

解析

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遭到严重破坏bebadlydamaged；undergoseveredestruction