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【单选题】
将一组计量资料整理数表的主要目的是()A.
化为计数资料
B.
便于计算
C.
形象描述数据的特点
D.
为了能够更精确地检验
E.
提供数据和描述数据的分布特征
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反馈参考答案：
举一反三
【简答题】预防煤炭自然火灾主要有四个方面的措施，即：开拓开采技术措施、（）措施、（）措施和预防性灌浆措施。
【简答题】为什么青霉素 G 不能口服?其钠盐或钾盐必须做成粉针剂型?
【单选题】14-53. Which of the following italicized parts is used as an object complement?
A.
The front door remained locked
B.
The boy looked disappointed .
C.
Nancy appeared worried .
D.
He seemed to have no money left .
【单选题】－Having many helpers makes a task easier and faster to complete. －I think so._______ .
A.
Many hands make light work
B.
Too many cooks spoil the broth
C.
The early bird catch the worm
D.
The more you learn, the more you know
【单选题】So many children have bought the balloons that the store is now out of ______ .
A.
stuff
B.
material
C.
stock
D.
staff
【单选题】Dr Ma, ________ ORBIS doctor, has done so important ________ job that many people are grateful to him. [ ]
A.
a; a
B.
a; an
C.
an; a
D.
an; an
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