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【多选题】
关于ZigBee说法正确的有()
A.
命名来源于蜂群使用的赖以生存和发展的通信方式
B.
适用于低成本、低速率、低功耗等应用场景
C.
技术联盟负责物理层和MAC层的协议
D.
IEEE802.15.4负责高层应用、测试和市场推广
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皮皮学刷刷变学霸
举一反三
【单选题】字母缩写SP表示下列哪种纤维:( )
A.
涤纶
B.
锦纶
C.
腈纶
D.
氨纶
【单选题】有机磷中毒烟碱样症状是()
A.
瞳孔散大、血压增高、心律失常
B.
头晕、共济失调、谵妄、昏迷
C.
瞳孔缩小、流涎、肺水肿
D.
癫痫样抽搐、瞳孔不等大
E.
肌肉震颤至全身抽搐,呼吸肌麻痹
【单选题】Without a(n) liberal supply of necessary equipment and materials, the mountain-climbers would not have been able to scale the heights and reach the top in such bad weather.
A.
lenient
B.
free
C.
casual
D.
abundant
【单选题】I have lost dangerous goods of IMO-Class VIII in position 23°N,126°E
A.
The vessel has lost a cargo of flammable liquids
B.
The vessel has lost a cargo of explosives
C.
The vessel has lost a cargo of corrosives
D.
The vessel has lost a cargo of radioactive materials
【单选题】电阻是如何阻碍电流上升的?
A.
依靠阻断电流
B.
依靠产生与电动势相反的电压
【单选题】蚊于黄昏群舞是与哪种习性有关:( )
A.
觅食
B.
消化胃内血液
C.
交配
D.
寻找产卵场所
E.
传播病原体
【单选题】Admissions Notice John Washington, We have (150) your completed application form. and all necessary documents and materials and other sources. A preliminary check of the material indicates that you ar...
A.
receives
B.
receiving
C.
receive
D.
received
【单选题】I have lost dangerous goods of IMO-Class III in position 23°N,126°E
A.
The vessel has lost a cargo of flammable liquids
B.
The vessel has lost a cargo of explosives
C.
The vessel has lost a cargo of corrosives
D.
The vessel has lost a cargo of radioactive materials
【简答题】电阻是反应阻碍导电的能力;电阻越大,溶液的电导
【简答题】II. Translate the following passage into Chinese. I n response to the activities of media consumers who obtain their content through peer-to-peer file sharing and other means not involving a tradition...
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