皮皮学，免费搜题
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【多选题】
以下哪些是使用百度物接入IoT Hub搭建物联网应用的优势？A.
无缝对接到天工平台和百度智能云的各项产品和服务
B.
实现对亿级并发连接和消息数的支持
C.
对海量设备与云端安全可靠的双向连接的支持
D.
需要自行发现宕机并完成迁移，迁移过程中服务会中断
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
举一反三
【简答题】阅读理解。 One day Mozart, a great musician, saw an old man sitting in a street corner (角落) with a hat in front of him. The old man could see __ 1 __ because he was blind (瞎的). He was playing the violin. I...
【简答题】Mr. Turner liked fishing. It was his favorite sport. He often fished for hours without catching anything. But this did not worry him. Some fishermen couldn’t catch fish. Sometimes they caught old boot...
【单选题】An eleven-year-old boy in a small town wanted to be a driver. But he was born without arms (手臂). His uncle taught him to usa his fuel as hands. He couldn't go to school so he spent all his time watchi...
A.
a plane driver
B.
a train driver
C.
a teacher
【简答题】阅读理解。 Mr Turner liked fishing. It was his favorite sport. He often fished for hours without catching anything. But this did not worry him. Some fishermen couldn't catch fish. Sometimes they caught old...
【单选题】It was an old empty hut that could offer a ________ for the night.
A.
protection
B.
cover
C.
shelter
D.
residence
【简答题】One day Mozart, a great musician, saw an old man sitting in a street corner (角落) with a hat in front of him. The old man could see 41__________ because he was blind (瞎的). He was playing the violin. It...
【简答题】B He was an old man who fished alone in a boat in the Gulf Stream and he had gone eighty-four days now without taking a fish. In the first forty days a boy had been with him. But after forty days with...
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