微波常见组网方式有哪些()。A.环型网络 B.点对点线型链路 C.上/下业务型 D.

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问题:

微波常见组网方式有哪些()。

A.环型网络

B.点对点线型链路

C.上/下业务型

D.枢纽型

考点:通信工程师无线通信无线通信题库
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根据图所给的三幅图,说明超声波在生产和生活中的应用:______说明超声波可以传递信息;______说明超声波可以传递能量.(选填“A”,“B”或“C”)

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Beijing: The United States and North Korea had their first ______ in four months here this afternoon as part of the ______ negotiations on how to end North Korea’s nuclear program, but diplomats played down prospects for______. James A. Kelly, assistant ______, and Kim Yong Ⅱ, North Korea’s deputy foreign minister, met ______ of formal discussions, ______ on direct dialogue that began after a stormy meeting ______ in which North Korea warned that it was moving quickly to ______ nuclear arms. The Bush administration had insisted ______ that it would only hold talks with North Korea ______ because, it argued, only ______ pressure would persuade North Korea to______. It got its way when North Korea dropped its insistence on ______ and agreed, after extensive efforts by China, to hold unusual simultaneous negotiations with ______,______,______ and ______ as well as the United States. Though Bush administration officials had not ______ talking privately with the North Koreans during______, the fact that Mr. Kelly and Mr. Kim met on the first day was seen as a sign of ______ by the American side.

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《陕西省收费公路管理办法》第二十九条规定哪些车辆可免交车辆通行费?

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患者男性,68岁。因冠心病间断发生左心衰竭3年,半天来与家人争吵后心悸、气短、不能平卧,咳粉红色泡沫痰,急诊入院。体检:BP90/60mmHg,R28次/分,神清,坐位,口唇发绀,心率130次/分,律齐,两肺满布湿啰音及哮鸣音。

患者此次心衰的主要诱因是()

A.心律失常

B.情绪激动

C.用药不当

D.肺部感染

E.血压不稳

题型:多项选择题

操作系统对磁盘进行读/写操作的单位是______。

A.磁道
B.字节
C.扇区
D.KB

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