【单选题】室温下,有pH=3的盐酸、硫酸、醋酸(假设HAc的电离度为1%)三种相同体积的溶液。以下叙述错误的是
C.
与足量的锌粉反应产生氢气的体积比为1∶1∶100
D.
与同浓度氢氧化钠溶液反应,消耗氢氧化钠溶液的体积为1∶2∶100
【单选题】下列关于PbCl2和SnCl2的叙述中,错误的是...( )。
D.
在多种有机溶剂中,SnCl2比PbCl2更易溶
【判断题】汇总记账凭证账务处理程序的缺点之一是按每一贷方科目编制汇总转账凭证,不利于会计核算的日常分工。
【单选题】A network administrator is troubleshooting the OSPF configuration of routers R1 and R2. The routers cannot establish an adjacency relationship on their common Ethernet link. The graphic shows the outp...
B.
管理员正在对路由器R1和R2的OSPF配置进行故障排除。 路由器无法在以太网链路上建立邻接关系。 该图显示了路由器R1和R2的show ip ospf interface e0命令的输出。 根据图中的信息,这个问题的原因是什么?
C.
The OSPF area is not configured properly.
E.
The priority on R1 should be set higher.
G.
The cost on R1 should be set higher.
I.
The hello and dead timers are not configured properly.
J.
llo和dead定时器配置不正确。 K. A backup designated router needs to be added to the network. L. 将备份指定路由器添加到网络中。
【多选题】B2C is the most common type of business model and what most people think about when discussing building e-commerce businesses. What are some of the examples of B2C?
B.
Jingdong Shopping Mall
【单选题】All over the world the mobile phone has leaped from being an impossible luxury in the early 1980s to most people would now call a necessity.
【判断题】汇总记账凭证账务处理程序的缺点之一是按每一贷方科目编制汇总转账凭证,不利于会计核算的日常分工。
【简答题】The mobile phone has been a part of our lives since the 1980s. It enables us to stay in contact with our family and friends at all times and in most areas. However, because of the quick acceptance and...