地表流水地质作用的类型和产物有哪些？
A、地表流水的地质作用主要包括侵蚀作用、搬运作用和沉积作用
B、暂时流水的地质作用有淋滤作用及残积层
C、暂时流水的地质作用有洗刷作用及坡积层
D、暂时流水的地质作用有冲刷作用及洪积层

单项选择题It took only four years to complete the construction of the Beijing-Zhangjiakou Railway ahead of schedule, and the cost of the project was only one fifth of that estimated by foreigners.

单项选择题Jeme Tien Yow designed a “herringbone” line during the construction of the Guangou section railway from Nankou to Chadaocheng of Badaling.