当前位置：在线题库搜索＞[单选题]PLC开关量输出接口中，只能用于驱动直流负载的输出接口是（ ）的答案是什么？
问题：
[单选题]PLC开关量输出接口中，只能用于驱动直流负载的输出接口是（ ）
A、接触器
B、继电器
C、双向晶闸管
D、晶体管
参考答案：
D
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