当柴油发电机在运行中发生发动机转速过高（飞车）时，应按急停按钮紧急停机。
参考答案：对
—Maria is wanted on the telephone. Where is she?
—She _________ the library. You can find her there。
A．has been to
B．has gone to
C．has left
D．has been in
