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【判断题】
为采区内一个或几个采掘工作面服务的巷道称为回采巷道。如采区上下山、采区车场等。()A.
正确
B.
错误
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【多选题】S7－200 CPU有哪些工作模式?（）
A.
STOP(停止)，CPU停止工作，不执行程序，PC机可向PLC下载程序和系统设置;
B.
RUN (运行)，运行用户程序
C.
WORKING(运行)，机器正常运行模式
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