搜题请搜索小程序“爱下问搜题”
问题 单项选择题

与教育储蓄相比，教育保险的优点不包括( )。

A．范围广

B．可分红

C．变现能力较强

D．特定情况下保费可豁免

答案

参考答案：C

解析： 一旦加入了保险计划，中途退出往往只能拿到较低的现金价值，相对而言变现能力较低。

选择题

某合作学习小组讨论辨析以下说法：①某物质可以导电，该物质不一定是金属单质；②将氯化铵与草木灰混合施用来提高肥效；③某物质和酸反应能生成气体，该物质一定是金属；④某物质能使无色酚酞试液变红色，该物质一定是碱性溶液⑤发现天然气泄漏，点火检查泄漏处；⑥回收利用废旧金属不仅可以节约资源，而且可以减少对环境的污染．其中正确的是（　　）

A．①④⑥

B．①③④

C．②⑤⑥

D．①②⑤
查看答案
单项选择题

Serialization delay and（）delay are the two components of network delay that are improved by increasing bandwidth. Serialization delay, i.e. the amount of time it takes to put the（）on the wire, and queuing delay (depth of the queue) are improved by increasing the（）from a 128kbps circuit to a T1. However, three other components of delay, routing/switching delay, distance delay, and protocol delay are components that can not be positively affected by an （）in bandwidth. If the circuits are not over-utilized, then increasing the bandwidth to improve the（）of the application will only result in an increased bandwidth with no positive effects on performance.

and protocol delay are components that can not be positively affected by an（）in bandwidth.

A．increase

B．decrease

C．maintenance

D．extension
查看答案