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听力原文:WB How's your business doing? MB Well, sales are definitely lower than expected. I think that's because the housing market has been slowing down recently. In the appliance world, even small changes in the housing market tend to affect us a lot. WB Hmm... I guess I never made the connection between the home appliance industry and the housing market before. But it makes sense. MB It sure does. When people buy new houses they usually buy new appliances for them. In fact, you can accurately gauge how the housing market is doing just by looking at our sales figures. What does the man say about his business?
A.
It plans to open new stores around the world.
B.
Sales are not as high as he had been expecting.
C.
It has been affected by recent political events.
D.
Sales are expected to increase in the next quarter.
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【多选题】下述示意图中有关路由器端口和交换机端口配置的说法中,哪三项是正确的?
A.
该路由器的Van端口被配置为中继端口
B.
在连接到交换机的路由器端口上,配置了多个子接口
C.
连接到交换机的路由器端口的速度被配置为10Mbit/s
D.
连接到集线器的交换机端口被配置为全双工模式
E.
连接到路由器的交换机端口,被配置为中继端口
F.
连接到主机的交换机端口被配置为接入端口
【单选题】三个中继器连接 10BASE5 的网络结构中网络最长布线长度为( )
A.
1500
B.
925
C.
2500
D.
2000
【简答题】倒波是维护工作中经常要进行的操作,A/B/C三个OTM站点,采用开放式800G系统,开通了国标定义的第1~5波业务波长和第80波备用波长。1~5波在B中继,80波站站上下。各站OMD都是AWG滤波器,A-B-C方向为A向。 一天你接到用户电话通知波长1、2在A-B间中断,你赶往现场处理故障,通过定位发现波长1是A站A向发端OTU1故障,波长2是B站A向中继OTUG2故障。此时你手边只有一块OTUG...
【简答题】“衰老”又称“老化”,分____与____两类
【单选题】三个中继器连接10BASE5的网络结构中网络最大布线长度为( )。
A.
1500
B.
925
C.
2500
D.
2000
【多选题】关于判断抽样正确的说法有______。
A.
又称目标抽样、主观抽样、立意抽样、专家抽样
B.
具有主观性,估计精度严重依赖于调查者自身的素质
C.
有时也会选择“极端型”的总体单位进行调查
D.
是概率抽样方法
【简答题】现代研究有关衰老发生机制的学说主要有______致衰老学说,______致衰老学说,______致衰老学说三大类。
【简答题】循环血液中衰老的红细胞经单核-吞噬细胞系统破坏,分解产生游离胆红素,又称_____。
【简答题】衰老的细胞具有以下主要特征: (1)__________________________, (2)__________________________, (3)__________________________, (4)__________________________, (5)__________________________。
【单选题】关于个体衰老与细胞衰老的关系,下列说法正确的是 [     ]
A.
细胞的衰老就是个体的衰老
B.
衰老的生物体内,细胞都处于衰老状态
C.
年幼的生物体内,没有衰老细胞
D.
从总体上看,个体衰老的过程是组成个体的细胞普遍衰老的过程
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