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S7-200PLC有哪几种扩展模块?

多选题
2022-04-02 18:18
A、数字量扩展模块:EM221、EM222、EM223
B、模拟量扩展模块:EM231、EM232、EM235
C、通信模块:EM227
D、现场设备扩展模块:CP243;
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正确答案
ABCD

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S7-200PLC有哪几种扩展模块?
()shall be liable for loss of and damage to the Vessel and/or goods arising or resulting from inaccuracies in stating the description,quantity,weight,measurement or contents.
输出继电器(OR)通过一对()触点将PLC的控制信号传递给负载。
Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo,without the authorization or privity of the Shipowner or his agent,is().
(), or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.
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