9. (单选题) Whenever an earthquake occurs, see to it that the ______ and gas are turned off.(本题1.0分) A、 electric B、 electrical C、 electronic D、 electricity

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题目内容（河南工学院-大学英语）

9. (单选题) Whenever an earthquake occurs, see to it that the ______ and gas are turned off.(本题1.0分)
A、 electric
B、 electrical
C、 electronic
D、 electricity

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南阳理工学院-课程与教学论