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【简答题】
两人测量同一标准样品,各得一组数据的偏差如下: 甲0.3, -0.2, -0.4, 0.2, 0.1, 0.4, 0.0, -0.3 ,0.2, -0.3: 乙:0.1.,0.1, -0.6 ,0.2, -0.1 ,-0.2, 0.5, -0.2, 0.3, 0.1 (1)求两组数据的平均偏差和标准偏差 (2)为什么两组数据计算出的平均偏差相等,而标准偏差不等? (3)哪组数据的精密度高?
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【简答题】无法匹敌的_________________。
【简答题】打造本行业最优质的、其他同行无法匹敌的卓越产品是工匠()。
【单选题】Young people today can't really choose what they should buy because they _______.
A.
are influenced by American culture
B.
don't know what is suitable for them
C.
are critical about everything in the world
D.
are faced with too many powerful advertisements
【判断题】To some people like the host, it’s reallystrange that Nokia should still sell, manufacture and distribute well.
A.
正确
B.
错误
【单选题】You really should go to Namibia. The scenery is _______ stunning and the people are very friendly.
A.
very
B.
fairly
C.
absolutely
【单选题】Why should you only send your memo to people who really need to read it?
A.
You don't want to spread rumors.
B.
You don't want to waste resources.
C.
If you send it to fewer people, you can keep the memo shorter.
D.
So you don't overwhelm people with too many memos.
【单选题】I really think we should more young people to do volunteer work.
A.
encourage
B.
encouraging
【单选题】Many people said and even more people thought: "surely someone should stop this insane old man before he really harms _____. "
A.
him
B.
others
C.
them
D.
himself
【单选题】I really think we should ____ more young people to do volunteer work.
A.
encourage
B.
encoouraging
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