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【单选题】
《史记》记载从上古皇帝到汉武帝__的历史A.
一千多年
B.
两千多年
C.
三千多年
D.
四千多年
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举一反三
【单选题】配对四格表中,为比较两样本 所 代表的总体率有无差别,下列说法正确的是
A.
备择假设为两样本率相等
B.
宜采用四格表专用公式计算卡方值
C.
可以采用配对设计的t检验
D.
其自由度与独立样本四格表卡方检验的自由度相同
【单选题】Dangerous goods required to be“carried on deck only”should not be carried on closed vehicle decks，but may be carried on open vehicle deck when authorized by the competent authority concerned．
A.
Under deck
B.
On deck
C.
On deck only
D.
Under deck only
【简答题】Most people think that Bike Sharing is more-(方便) than any other vehicl
【单选题】Which kind of job that the bullocks do is NOT mentioned in the passage?
A.
Pulling vehicles
B.
Plowing fields
C.
Pumping water out if wells
D.
Carrying food baskets.
【单选题】Scientists have been taking a closer look at the lighting in our homes, offices and vehicles, and they're seeing a possible way to improve health. Engineer E. Fred Schubert is talking about a new era ...
A.
Digital clock.
B.
Traffic lights.
C.
Swimming pools.
D.
Cassette players' speakers.
【单选题】Which of the following is NOT true according to passage?
A.
The street walkers in the vehicle accidents can be forgiven in some accidents.
B.
The irresponsibility of many vehicle accidents should not be left alone on drivers.
C.
Many cyclists ignore their responsibility in following traffic regulations.
D.
The cyclists don't have to obey the rules of the road.
【单选题】听力原文： Let' s proceed to the main exhibition hall and look at some of the actual vehicles that played a prominent role in speeding up mail delivery. Consider how long it used to take to send a letter a...
A.
Overland transportation in the nineteenth century.
B.
Historical aspects of mail delivery.
C.
Vehicles currently in use by the postal service.
D.
The invention of railroad.
【单选题】配对四格表中,用卡方 检验比较两样本所代表的总体率有无差别,下列说法正确的是
A.
备择假设为两样本率相等
B.
其自由度与独立样本四格表 卡方 检验的自由度相同
C.
宜采用四格表专用公式计算卡方值
D.
当有理论频数小于 5 时，需作连续性校正
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