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单选题
It is the operator＇s responsibility to maintain the handbook in a current status.
A
A.Operator is in charge of the maintenance of the handbook.
B
B.The handbook should be kept current by the operator.
C
C.The operator should store the handbook in a proper status.
答案解析
正确答案：A
解析：
题干中指出操作员有责任维护手册的最新状态，选项A表达了这一意思，符合题意。
相关知识点：
操作员负责手册维护更新
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