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单选题
In some cases, cleaning the connectors or replacing the IDG appears to correct the problem, but the messages recur after some time.
A
In certain circumstances, cleaning the connector or replacing the IDG seems to solve the problem, but the messages will appear again later.
B
Sometimes, cleaning the connector or replacing the IDG seems to settle the problem, but the message will reappear occasionally.
C
Sometimes, sterilizing the connector or renewing the IDG seems to resolve the problem, but the message will occur later.
答案解析
正确答案：A
