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进行爆发力训练时,训练次数、组数的确定,以( )、( )为原则

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短期贷款的利率( )

A. 5%
B. .10%
C. .15%
D. 20%

What is the main cause of consolidation settlement of subgrade?

A. wind
B. load
C. ground water
D. plant

The superstructure of track system is compose of()、()、()

Railway ballast performs several functions by:

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