皮皮学，免费搜题
登录
搜题
【单选题】
质点做直线运动的位移x与时 间t的关系为x=5t+t2(各物理量均采用国际单位制单位),则该质点 ( )A.
第1 s内的位移是5 m
B.
前2 s内的平均速度是6 m/s
C.
任意相邻的1 s内位移差都是1 m
D.
任意1 s内的速度增量都是2 m/s
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】在FANUC-0T系统中,字母R在G02中表示( ),在G71中表示( ),在G73中表示( )
【单选题】在word2010中,要想对文档进行翻译,需执行以下哪项操作( )
A.
“审阅”标签下“语言”功能区的“语言”按钮
B.
“审阅”标签下“语言”功能区的“英语助手”按钮
C.
“审阅”标签下“语言”功能区的“翻译”按钮
D.
“审阅”标签下“校对”功能区的“信息检索”按钮
【单选题】The advantage of using computers is that computers can______.
A.
be more efficient at the busiest hours
B.
help people cash money conveniently
C.
return goods to suppliers
D.
replace efficient employees for the personnel management
【单选题】The present problem with computers is that______.
A.
computers will one day take over the world from man
B.
computers are putting more and more pressure on people' s life
C.
people are too dependent on computers
D.
people always make mistakes in using computers
【单选题】Consumers regard Dell computers and Apple computers as substitutes. If the price of a Dell computer decreases, the
A.
demand for Dell computers increases.
B.
demand for Apple computers increases.
C.
demand for Apple computers decreases.
D.
supply of Dell computers increases.
E.
demand for Dell computers decreases.
【单选题】Computer office systems consist of ______.
A.
computers and typewriters
B.
typewriters and computers
C.
typewriters and their peripheral equipment
D.
computers and their peripheral equipment
相关题目：
参考解析：
知识点：
题目纠错 0
发布
