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问题
单项选择题
对于动臂式起重机,当吊臂长度一定时,起升高度随工作幅度的()。
A.增加而减小
B.减小而减小
C.增加而增加
D.减小而增加
答案
参考答案:
A
补全对话,情景问答
把左栏中的问题与右栏中的答语配对。
( )1.Happy New Year!
( )2.What day is it today?
( )3.When were you born?
( )4.Can I use your eraser?
( )5.How is the weather today?
A.It's windy.
B.On July 3rd.
C.No way.
D.The same to you!
E.It's Friday.
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问答题 简答题
试述黏度在生产中的应用?
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