5t桥式起重机线路中，凸轮控制器的手柄处于第一挡时，所有5对触点都是断开状态，电动机处于最高速的运行状态。
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What does the woman mean
A. She is probably to fail the exam again.
B. She doesn’’t want to pass the exam because she wants to disappoint the man.
C. She is confident that she will pass the exam.
D. She didn’’t take part in the exam.
接线图以粗实线画主电路，以点画线画辅助电路。
A. 对
B. 错
CA6140型车床从安全需要考虑，快速进给电动机采用连续控制，按下快速按钮就可以快速进给。
A. 对
B. 错
车床电源采用三相380V交流电源，由电源开关QS引入，总电源过载保护为FU。
A. 对
B. 错
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