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【判断题】
典型的联网门禁系统由门禁服务器、门禁管理软件、控制器、接口模块、读卡器、卡片、电锁、出门按钮、紧急玻璃破碎器和蜂鸣器等设备组成。
A.
正确
B.
错误
举报
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Some pessimistic experts feel that the automobile is bound to fall into disuse. They see a day in the not-too-distant future when all autos will be abandoned and allowed to rust. Other authorities, ho...
A.
How to render automobiles pollution-free.
B.
How to make smaller and safer automobiles.
C.
How to solve the problem of traffic jams.
D.
How to develop an automated subway system.
【多选题】下列设备可以做为 IO 控制器操作 IM 154-4 PN High Feature 接口模块的是：（）
A.
317-2PN/DPv2.2
B.
315-2PN/DPv2.5
C.
6GK7343-1GX21v1.0
D.
6GK7343-1EX21v1.1