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问题
判断题
当绞磨受力后,可采用放松尾绳的方法进行松磨。
答案
参考答案:
错
选择题
— Do you have today's Xianyang Daily?
— Yes, but only one copy left. Would you like to take ______?
A. some
B. them
C. it
D. one
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解答题
3
7
÷
4
5
+
4
7
×
5
4
(
5
12
+
7
18
)÷
1
36
.
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