站内正线,到发线与其相邻线,最小线间距为()。
A.4000mm
B.460mm
C.5000mm
D.5300mm
参考答案:C
There is no doubt _____.[ ]
A. whether he will finish the work on time
B. if he will finish the work on time
C. that he will finish the work on time
D. how he will finish the work on time
2009年12月19日闭幕的联合国气候变化大会通过了无约束力的()
A.京都议定书
B.巴厘岛路线图
C.哥本哈根协议
D.联合国气候变化框架公约