矩形ABCD中,对角线AC、BD交于点O,AE⊥BD于E,若OE:ED=1:3,

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问题:

矩形ABCD中,对角线AC、BD交于点O,AE⊥BD于E,若OE:ED=1:3,AE=
3
,则BD=______.
考点:勾股定理矩形,矩形的性质,矩形的判定
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呼吸衰竭

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金某,男,70岁,陈旧性心梗10年史,现症见:发憋、气短、胸闷、呼吸困难、口唇紫绀,夜间加重,咳嗽、吐痰。查体:T37,5℃,P58次/分,R25次/分,BP16/105mmHg屯,双肺可闻及痰鸣音,双肺底布满湿啰音,心界向左下扩大,心尖搏动向左下移位,心尖部可闻及舒张期奔马律,心律不齐,肝脾未触及,双下肢轻度浮肿。X线片示:肺纹理增粗,两侧肺门阴影增大,心影增大。心电图示:完全性房室传导阻滞陈旧性心梗,心肌缺血

治疗宜()

A.抗炎治疗

B.安装人工心脏起搏器

C.自动复律除颤器

D.洋地黄类制剂

E.补充血容量

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The Border Gateway Protocol (BGP) is an interautonomous system (28) protocol. The primary function of a BGP speaking system is to exchange network (29) information with other BGP system. This network reachability information includes information on the list of Autonomous System (ASs) that reachability information traverses. BGP-4 provides a new set of mechanisms for supporting (30) interdomain routing. These mechanisms include support for advertising an IP (31) and eliminate the concept of network class within BGR BGP-4 also introduces mechanisms that allow aggregation of routes, including. (32) of AS paths. These changes provide support for the proposed supernettting scheme.

A. answerless B. connectionless C. confirmlessD. classless

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投资部是基金管理公司管理基金投资的最高决策机构。( )

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政府补贴政策所产生的经济效应可以从()两方面来分析。

A.经济效益和社会效益;

B.替代效应和规模效应;

C.价值形态和实物形态。

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