搜题请搜索小程序“爱下问搜题”
问题 解答题

甲每小时行11千米，乙每小时行13千米，甲从南庄向南行，同时乙从北庄向北行．经过3小时后，两人相隔80千米．南北两庄相距多少千米？

答案

80-（11+13）×3，

=80-72，

=8（千米）；

答：南北两庄相距8千米．

单项选择题

对于工程项目管理而言，风险是指可能出现的（）的不确定因素。

A．影响项目目标实现

B．影响项目进度控制

C．影响项目风险管

D．影响项目组织协调
查看答案
单项选择题

Computers will become more advanced and they will also become easier to use.Improved speed recognition will make the operation of a computer easier.Virtual reality(虚拟现实),the technology of (71) with a computer using all of the human senses,will also contribute to better human and computer (72). Other, exotic(奇异的) models of computation are being developed,including biological conputing that uses living organisms,molecular computing that uses molecules with particular (73),and computing that uses DNA,the basic unit of heredity(遗传),to store data and carry out operations.These are examples of possible future computational platforms that,so far,are limited in abilities or are strictly (74). Scientists investigate them because of the physical limitations of miniaturizing circuits embedded in silicon. There are also (75) related to heat generated by even the tiniest of transistors.

（73）处填（）。

A．software

B．properties

C．programs

D．hardware
查看答案