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【简答题】
听句子,选图片。请选出与句子内容相符的图片。只读一遍。 1. What does Jack have? 2. Where is Linda’s key? 3. What does Tony usually do after dinner? 4. What does Mr Brown want to buy? 5. What kind of movies does Sam like?
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【单选题】加权算术平均数的大小受各组
A.
次数的影响最大
B.
标志值的影响最大
C.
权数的影响最大
D.
标志值(x)和权数(f)的影响最大
【简答题】横线里最大能填几? ______×2<15 9×______<60 5×______<44.
【简答题】横线里最大能填几? ______×6<49 8×______<63 ______×5<44.
【单选题】加权算术平均数的大小受各组
A.
次数的影响最大
B.
标志值的影响最大
C.
权数的影响最大
D.
标志值和次数的共同影响
【简答题】my3+(133+44)=(my3+______)+44.
【单选题】加权算术平均数的大小受各组
A.
次数(f)的影响最大
B.
标志值(x)的影响最大
C.
权重系数(f/∑f)的影响最大
D.
标志值(x)和次数(f)的共同影响
【多选题】齿轮传动按润滑方式不同可分为()。
A.
开式
B.
半开式
C.
闭式
D.
半闭式
E.
以上说法都对
【单选题】It's 7: 44. Time ____________ breakfast. [     ]
A.
to
B.
for
C.
at
D.
in
【简答题】 Passage 2 When people have more money than they need for ordinary ( 平常的 ) things, they sometimes spend their spare money in traveling and seeing other parts of the world. European ( 欧洲的 ) people go ...
【简答题】Five students went out for a one-week trip in the countryside. When they returned, the group leader wrote a report about each student. _ A. He was getting on very well until he hurt his foot on the ...
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