搜题请搜索小程序“爱下问搜题”
问题 单项选择题

下列不属于证券投资基金特点的是( )。

A．独立托管

B．分散投资

C．专业管理

D．没有风险

答案

参考答案：D

解析： 证券投资基金具有以下几个特点：①集合理财、专业管理；②组合投资、分散风险；③利益共享、风险共担；④严格监管、信息透明；⑤独立托管、保障安全。证券投资基金是一种利益共享、风险共担的金融产品，因此不能认为其无风险。

填空题

工矿企业房内配电除大型动力用高压外，其他均为低压，采用（）V，三相四线制供电既动力用（）V，照明及单相电器用（）V
查看答案
单项选择题

A transport layer protocol usually has several responsibilities．One is to create a process-to-process communication；UDP uses (1) numbers to accomplish this．Another responsibility is to provide control mechanisms at the transport level．UDP does this task at a very minimal level．There is no flow control mechanism and there is no(2) for received packet．UDP, however, does provide error control to some extent．If UDP detects an error in the received packet，it will silently drop it． The transport layer also provides a connection mechanism for the processes．The (3) must be able to send streams of data to the transport layer．It is the responsibility of the transport layer at (4) station to make the connection with the receiver, chop the stream into transportable units，number them，and send them one by one．It is the responsibility of the transport layer at the receiving end to wait until all the different units belonging to the same process have arrived，check and pass those that are (5) free, and deliver them to the receiving process as a stream．

（5）处应填（）。

A．call

B．state

C．cost

D．error
查看答案