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【简答题】
已知某设备接入阿里物联网云时，所设置的参数为：clientId = DeviceMAC，deviceName = MyDevice， productKey = qwdj89， timestamp = 20200210，signmethod=hmacsha1，deviceSecret=pomhUHhj请问此时阿里物联网云的接入所提交的MQTT用户名是什么？
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反馈参考答案：
举一反三
【简答题】A．Its shape. B．Its size. C．Its location. D．Its brightness.
【单选题】According to Martyna, the city's disadvantage is ______ .
A.
its actual size.
B.
its transport system.
C.
its evening entertainment.
【简答题】A．Its texture. B．Its size. C．Its preservation. D．Its shape.
【单选题】“Its compact size and unique design make it easy to transport.”这是某店铺一款沙发的产品描述,请选出句中“compact”的正确解释。( )
A.
复杂的
B.
紧凑的
C.
牢固的
D.
精确的
【简答题】A．Its texture. B．lts size. C．Its preservation. D．Its shape.
【简答题】its size is immeasurable ______
【单选题】听力原文：W: I can't understand why you can speak English so well in such a short time. M: If you pay attention to what our teacher says, you will speak as well as me. Q: What does the man mean? (5)
A.
Listen halfheartedly to the teacher in class.
B.
Pay attention when teacher speaks English.
C.
Follow the teacher's spoken English.
D.
Follow the teacher's advice on speaking English.
【简答题】听力长对话：W： Hi Leo， why do you say English would become the world language？W： Hi Leo， why do you say English would become the world language？ M： Well。 For one thing， it’s so commonly used， the only langu...
【简答题】某汽车机械式变速器的传动机构简图如下图所示。请写出倒 档档位的动力传递路线。
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