女,2岁,多次患肺炎,胸片示:肺纹理增强,左心房、左心室增大,主动脉影增宽,应诊断为 发布时间:2017-07-16 21:28 │ 来源:www.tikuol.com 题型:单项选择题 A1/A2型题 问题: 女,2岁,多次患肺炎,胸片示:肺纹理增强,左心房、左心室增大,主动脉影增宽,应诊断为()。A.房间隔缺损B.室间隔缺损C.动脉导管未闭D.法洛四联症E.艾森曼格综合症
题型:单项选择题 A1/A2型题 In low-speed network,it is usually adequate to wait for congestion to occur and then react to it bytelling the source of packets to slow down.In high-speed networks,this approach often works poorly,because in the (71) between sending the notification and notification arriving at the source,thousands of additional (72) may arrive.In ATM network,a major tool for preventing (73) is (74) control.When a host wants a new virtual (75) ,it must describe the traffic to be offeredand the service expected.(73)处填()。A.collisionB.congestionC.dropD.delay 查看答案
题型:单项选择题 A1/A2型题 (一)根据下列资料回答问题。2010年某市实现社会消费品零售总额719.48亿元。其中批发和零售业实现零售额651.38亿元,同比增长18.2%;住宿和餐饮业实现零售额68.1亿元,同比增长24%。按新的城乡标准划分,城镇市场实现零售额673.3亿元,增长20.2%。限额以上批发和零售额企业实现零售额169.5亿元,其中同比增长最多的是汽车类增长42.9%。其次为金银珠宝类增长30.4%。全市“家电下乡”活动累计销售家电36万台,实现销售额8亿元;“以旧换新”活动回收五类旧家电共40.6万台(部),销售新家电41万台(部),销售额达14.6亿元。按新的城乡标准划分,2010年该市城镇市场实现社会消费品零售总额约是乡村市场的()。A.4倍B.14.6倍C.15.6倍D.29倍 查看答案