【单选题】【消耗次数:1】
输出继电器(Y) 能够由外部信号驱动。
正确
错误
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相关题目
【判断题】 PLC的输入继电器只能由外部信号驱动。
①  正确
②  错误
【单选题】 输出继电器(Y) 是作用是将PLC程序的结果输出传给负载。
①  正确
②  错误
【单选题】 输出继电器的线圈能使用()次 。
① 
② 
③ 
【单选题】 FX2系列输出继电器代号是____。
①  X
②  Y
③  S
④  M
【判断题】 外部输入/输出继电器、内部继电器、定时器、计数器等器件的触点不可多次重复使用。
①  正确
②  错误
【单选题】 输入和输出继电器的触点可使用()次。
① 
② 
③ 
④  无限
【判断题】 输入和输出继电器的触点可使用无限次。
①  正确
②  错误
【单选题】 FX2N的输出继电器最多可达(????)点?。
①  128
②  64
③  256
④  512
【判断题】 LD指令和LDI指令的操作元件可以是输入继电器X、输出继电器Y、辅助继电器M、状态继电器S、定时器T、和计数器C、中的任何一个。
①  正确
②  错误
【判断题】 在工程实践中,常把输出映像寄存器称为输出继电器。
①  正确
②  错误
随机题目
【单选题】 3. She was so pleased that she felt like _______.
①  to find someone to talk
②  to find some to talk to
③  finding someone to talk
④  finding someone to talk to
【单选题】 1.The authors purpose of writing
①  To predict how children under the future educational system would feel
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③  to display the availability of the net courses
【单选题】 23. English has become _____ international language of business.
①  the
②  . a
③  /
④  . one
【单选题】 8.The girl was dancing about excitedly when suddenly she stood_______ and put on a horrified look.
①  silent
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③  quiet
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【单选题】 4.He was working on a children’s book______ Limericks.
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③  labeled
④  entitled
【单选题】 20.When he was in_____ hospital, we all went to _____ hospital to visit him .
①  the, /
②  /, the
③  the, the
④  the, a
【单选题】 17._____ breakfast I ordered still hasn’t arrived. .
①  The
②  . /
③  A
④  One
【单选题】 19.We know _____ children learn from playing.
①  the
②  a
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【单选题】 12. When you are _____ with the book, please don’t throw it away.
①  finishing
②  . familiar
③  through
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【单选题】 26. I couldn’t go to Jane’s party. It was ______ day I was babysitting for Derek and Linda.
①  the
②  a
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