架空导线间距不小于( )mm。
A.200
B.300
C.500
D.600
参考答案:B
________achievement, China was a great success in launching Chang'eⅡ.[ ]
A. In case of
B. In terms of
C. As a result of
D. In face of
(3)结合十七大报告精神,请你谈谈如何加快推进以改善民生为重点的社会建设。