皮皮学，免费搜题
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搜题
【单选题】
实验中GX developer编程软件下载程序到PLC使用的是什么接口下载线?A.
以太网RJ45
B.
串行通讯RS485
C.
串行通讯RS232
D.
并行通讯模式
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
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【简答题】自主学习任务单
【简答题】Passage 1 Car servicing is something that every car owner has to experience at least some time of the year. The best method to service your car is to go to your car service station and have the servic...
【单选题】Task 13 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace> Car servicing is something that every car owner has to experience at least sometime of the year. The best method to serv...
A.
To service your car by yourself.
B.
To have your car serviced at the service station.
C.
To turn to other car owners for help.
D.
To send your car back to the car maker.
【简答题】自主学习任务单
【单选题】每次试验的成功率为p(0A.(1－p)2B.1－p2C.3(1－p)D.1－p3
A.
每次试验的成功率为p(0＜ｐ＜１） A.(1-p) 2
B.
1-p 2
C.
3(1-p)
D.
1-p 3
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