皮皮学,免费搜题
登录
搜题
【单选题】
2013 年铁人三项赛之世锦赛总决赛将于 9 月在伦敦举行,铁人三项赛 包括一点五公里游泳、四十公里自行车和十公里跑步三部分, 总距离为五十一点五公里。某运动员最终以总成绩 2 小时 10 分 00 秒的成绩夺冠,若已知此运动员在三项中各段的时间分别为 t 1 、 t 2 、 t 3 ,对应行程为 s 1 、 s 2 、 s 3 ,三项中各段的平均速率分别为 v 1 、 v 2 、 v 3 ,则(计算中结果保留一位小数)
A.
一点五公里、四十公里和十公里均指位移,2小时10分00秒是指时间
B.
三项中各段的平均速率满足v1
C.
整个过程中的平均速率可用 计算
D.
整个过程中的平均速率为v=6.6 m/s
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【简答题】It is also interesting to note that in talking, Americans are likely to end a sentence with a dropping of the head or hand, as well as with a lowering of the eyelids.
【简答题】The Americans are likely to depend on English______.
【单选题】Black Americans are more likely to die of cancer than
A.
people in other countries.
B.
white Americans.
C.
a11 other Americans.
D.
their ancestors.
【单选题】During which activity are young Americans most likely to multitask?
A.
a. sending instant messages
B.
b. reading
C.
c. sending e-mail
D.
d. watching television
【多选题】In casual conversation, Americans are more likely to talk about____
A.
sports
B.
past experience
C.
weather
D.
jobs
【单选题】Americans are likely to finish ________ a question with a raise of the hand, a lift of the chin, or a widening of the eyes.
A.
at
B.
for
C.
up
D.
out
【判断题】Americans are likely to do that
A.
正确
B.
错误
【判断题】It is also interesting to note that in talking, Americans are likely to end a sentence with a dropping of the head or hand, as well as with a lowering of the eyelids.同样能有趣地发现,美国人讲完一句话时可能抬下头或举一下手, 还可能垂...
A.
正确
B.
错误
【单选题】______为组织的持续发展提供了一种方法和工具,支持组织不断地修改和优化其众多的业务流程。
A.
业务流程再造
B.
业务流程管理
C.
计算机辅助软件工程工具(CASE)
D.
全面质量管理(TQM)
E.
系统分析与设计
【单选题】How many Americans are likely to suffer panic disorder every year according to NIMH?
A.
1,800,000.
B.
2,500,000,
C.
Above 2,000,000.
D.
Under 2,000,000.
相关题目: