现场总线控制系统是指（）
A.DCS
B.FCS
C.继电控制
D.ESD
参考答案：B
要想正确的处理医疗纠纷案件，首先要（）。
A、调查
B、实事求是
C、分清责任
D、认真
—How was your journey last week?
—Very interesting. The people there still keep the custom _____ the Ming Dynasty, which is different from other areas.
A．dating back to
B．dating back
C．dated back to
D．dated back
