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单选题
514、Do not go into the engine test area without approval.
A
Approval is a must when entering the engine test area
B
It is forbidden to go into the engine test area with approval.
C
Entering the engine test areal must not be approved.
答案解析
正确答案：A
解析：
解析:approval_批准 is go into=entering 进入。forbidden 禁止。
