皮皮学,免费搜题
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搜题
【单选题】
从总体的N个单位中抽取n个单位构成样本,共有()可能的样本。
A.
1个
B.
N个
C.
n个
D.
很多个(但要视抽样方法而定)
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参考解析:
知识点:
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皮皮学刷刷变学霸
举一反三
【单选题】急性感染性心内膜炎最常见的致病菌是 ( )
A.
金黄葡萄球菌
B.
肺炎球菌
C.
草绿色链球菌
D.
D 族链球菌
E.
表皮葡萄球菌
【单选题】听力原文: Medical teams are being dispatched to remote villages in India's northeastern state of Assam to deal with an out-break of malaria that so far has claimed at least 18 lives by official count. Est...
A.
plague
B.
measles
C.
malaria
D.
rabies
【判断题】排烟热损失包括烟气中的可燃气体排出锅炉造成的热损失。
A.
正确
B.
错误
【简答题】锚链接的路径格式为“( ) ” 后面加上锚记名称 。
【单选题】在计算项目投资的现金流量时,节约的经营成本应当列作()。
A.
现金流入
B.
现金流出
C.
回收额
D.
建设投资
【简答题】What is the purpose of the video library? To help people improve their ___________________ abilities. 17.What problem may people have when using the library for the first time? They may have difficult...
【判断题】无公害畜禽养殖过程标准禁止使用转基因方法生产的饲料原料。
A.
正确
B.
错误
【单选题】You can find your nose in the darkness because of your 'felt image'.
A.
True
B.
False
【单选题】You can find your nose in the darkness because of your 'felt image'.
A.
Right
B.
Wrong
【单选题】—Let's go and visit their new school.   — ________. [     ]
A.
That's all right
B.
You're right
C.
Right
D.
All right
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