客运专线及时速200km/h客货共线Ⅰ级铁路,路堤边坡高度在膨胀土、湿陷性黄土等特殊岩土及岩溶发育区等不良地质区段不应超过()m。
A、8
B、10
C、12
D、15
参考答案:A
下列书法家属于“宋四家”之一的是
A.柳公权
B.颜真卿
C.董其昌
D.黄庭坚
()is used for receiving maritime safety information which is automatically printed by the receiver.
A.NAVETEX receiver
B.Search and Rescue Transponder
C.Emergency Position Indicating Radio Beacon
D.Digital selective calling