时速350公里42号道岔,直线尖轨距尖端4014mm处尖轨降低值()mm。
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There is actually an overlap of()ocean regions somewhere in Western European Waters.
A. as many as three
B. more than two
C. less than two
D. up to four
学校对学生进行德育的基本途径有各学科教学、课外活动、班主任工作等。
A. 正确
B. 错误
办理改晚乘车签证手续最晚不超过开车后2小时,团体旅客必须在()办理。
A. 开车前48小时
B. 开车48小时以前
C. 开车24小时前
D. 不办理