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【判断题】
出入国境不仅关系到国家主权、安全、人民的健康等,而且直接关系到旅游者的合法权益A.
正确
B.
错误
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【单选题】The scientist knew nothing about the matter, because he was always _________ himself in his study.
A.
burying
B.
devoting
C.
focusing
D.
concentrating
【单选题】Passage Five Billy Joel was born on Long Island, in New York State. He began taking piano lessons at an early age and joined his first rock band when he was fourteen. After playing in a number of Long...
A.
when he joined his first rock band
B.
after he was named 'Best New Male Vocalist'
C.
at fourteen
D.
before he was fourteen years old
【简答题】It happened towards evening, when I was resting in a cafe. I 36 a pair of newly bought white leather shoes, which were rather expensive. Then 37 came to me. He was in an unfit shirt, 38 pale and weak...
【单选题】从2000名学生中按不重复抽样方法抽取100学生进行调查,其中有女生45名,则样本成数的抽样平均误差为( )
A.
0.24%
B.
4.85%
C.
4.97%
D.
以上都不对
【简答题】收到宏达公司前欠货款 100 000元,收到银行收账通知单。(2分)
【单选题】从2000名学生中按不重复抽样的方法抽取了100名进行调查,其中有女生45名,则样本成数的抽样平均误差为
A.
0.24%
B.
4.85%
C.
4.97%
D.
以上都不对
【单选题】从2000名学生中按不重复抽样方法抽取了100名进行调查，其中有女生45名，则样本成数的抽样平均误差为( )。
A.
0.24%
B.
4.85%
C.
4.97%
D.
以上都不对
【简答题】It happened towards evening, when I was resting in a cafe. I a pair of newly bought white leather shoes, which were rather expensive. Then came to me. He was in an unfit shirt, pale and weak. He looke...
【单选题】从2000名学生中按不重复抽样方法抽取了100名进行调查，其中有女生45名，则样本比例的抽样平均误差为
A.
0.24%
B.
4.85%
C.
4.97%
D.
以上都不对
【单选题】从2000名学生中按不重复抽样方法抽取了100名进行调查，其中有女生45名，则样本成数的抽样标准误为
A.
0.24%
B.
4.85%
C.
4.97%
D.
以上都不对
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