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【单选题】
增大样本含量,理论上可使下列哪项更小A.
均数的抽样误差
B.
样本中位数
C.
样本极差
D.
样本标准差
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】听力原文：W: Hello, Tom. How was the trip? M: It was a terrible experience. W: Can you tell me what happened? M: I intended to fly to New York to attend a meeting, but I got on the wrong plane and it took ...
A.
He feels lucky.
B.
He feels awful.
C.
He feels unforgettable.
D.
He feels tired.
【单选题】在下列各教学模式中,哪一项不属于以认知发展为取向的教学设计模式( )。
A.
罗杰斯的教学设计模式
B.
瓦根舍的教学设计模式
C.
赞科夫的教学设计模式
D.
加涅的教学设计模式
【单选题】机车每走行( )后，要更换轴箱内的全部油脂。
A.
(40~50)×104km
B.
(19~20)×104km
C.
(8～10)×104km
D.
(6～7)×104kin
【单选题】听力原文：W: Hello, Tom. How was the trip? M: It was a terrible experience. W: Can you tell me what happened? M: I intended to fly to New York to attend a meeting, but I got on the wrong plane and it took ...
A.
He feels lucky.
B.
He feels awful.
C.
He feels unforgettable.
D.
He feels tired.
【简答题】____是民生之源,是改善民生、实现发展成果由人民共享最重要最直接的方式。【正确答案】收入分配
【单选题】Whose presidential term is the longest in the U.S.?
A.
Franklin Roosevelt.
B.
George Washington.
C.
Thomas Jefferson.
D.
Abraham Lincoln.
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