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单选题 状态流程图(顺序功能图)由步、动作、有向线段和( )组成
学科：机电设备电气控制与PLC
时间：2025-10-15 14:25:26
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题目1单选题
状态流程图(顺序功能图)由步、动作、有向线段和( )组成A. 转换B. 转换条件C. 初始步D. 触点
题目2单选题
顺序功能图中两步之间绝对不能直接连接,必须用( )个转换将它们隔开A. 1B. 2C. 3D. 5
题目3填空题
PLC的编程语言有____________、_________、功能块图、指令表和结构文本题目4填空题
步进返回指令RET的意义用于返回__________.使步进顺控程序执行完毕后,非状态程序的操作可在____________上完成,防止出现逻辑错误题目5单选题
We want to look for a place ________there are no cars parked on the streetsA. whichB. whereC. whoD. in
题目6单选题
The house __________he lives was once a village post officeA. whereB. whichC. thatD. who
题目7单选题
_________I have been only at college for two days, I have learnt a lot of new thingsA. AlthoughB. BecauseC. IfD. When
题目8单选题
This park is the place _______I usually come at the weekendA. whichB. whereC. whoD. when
题目9单选题
April is the month ______there are lots of music festivalsA. whenB. whereC. whichD. that
题目10单选题
________you may not be sure what you want to major in, you should have a general idea of the types of things that you want to studyA. Even thoughB. EvenC. Now thatD. If
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