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【多选题】
可以综合描述定量变量的平均水平和变异程度的是：____A.
误差图
B.
箱式图
C.
线图
D.
直方图
E.
条图
F.
圆图
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反馈参考答案：
举一反三
【单选题】When Bob bent down, he was trying to（）
A.
pick up a watch
B.
hide the fact that he had found the watch
C.
pick up the watch that has slipped off his wrist
D.
pretend that he had found the watch
【单选题】When he bent down to tie his showlace, The belt of his trousers_______.
A.
ruined
B.
cracked
C.
broke
D.
split
【简答题】车螺纹时,表面成形运动有( )个,属于 ( ) 成形运动。(简单/复合)
【单选题】B. Choose the best answer and complete the passage ( 选择最恰当的选项完成短文 ) (6 分 ) ( 词数: 304) One evening I was resting in a cafe. I 7 a pair of newly bought white shoes, which were rather expensive. Then a b...
A.
took
B.
wore
C.
fixed
D.
owned
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