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【单选题】
程序段N25 G90 X60. 0 Z-35.0 R-5.0 F3.0;中R为被加工锥面大小端半径差其值为( )mm,( )。A.
5、负
B.
5、正
C.
5、
D.
2.5、负
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【简答题】Scotland to Robert Burns is the birth place of _______, and the country of _________.
【单选题】Robert Burns is remembered mainly for his songs written in the ______ dialect on a variety of subjects.
A.
England
B.
Welsh
C.
Scottish
D.
Irish
【单选题】Robert Burns is the best known of the poets who have written in the ( ) dialect.
A.
I rish
B.
Scottish
C.
London
D.
C eltic
【单选题】(2013·山东济南二模)The poem A Red, Red Rose written by Robert Burns is popular with the Chinese young people, because the poem is easy ________.
A.
to be understood
B.
to understand
C.
understand
D.
understanding
【简答题】所谓高级消费,主要是就旅游消费水平和 而言
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