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【判断题】
非概率抽样的样本结果不适合推断总体。
A.
正确
B.
错误
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【判断题】新加坡 3M 医疗保险体系包括保健储蓄计划、健保双全计划和保健基金计划。
A.
正确
B.
错误
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A.
河网汇流过程中
B.
坡面漫流过程中
C.
坡地汇流过程中
D.
河槽集流过程中
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A.
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B.
错误
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【单选题】不同径流成份的汇流,其主要区别发生在( )。
A.
河网汇流过程中
B.
坡面漫流过程中
C.
坡面汇流过程中
D.
河槽集流过程中
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【简答题】选择你所听到的句子。 (     )1. A. What colour is it? B. What time is it? C. Where is it? (      )2. A. Is this your computer? B. Do you have lunch at school? C. The can is on the first floor. (      )3. A. ...
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