【简答题】如何分析和评价滑坡的稳定性?滑坡的防治原则和措施有哪些?
【单选题】S1:Pan-Pan Pan-Pan Pan-Pan. New Harbour Control, New Harbour Control, New Harbour Control, New Harbour Control. This is Motor vessel Birth. Call sign Delta Alpha Mike Kilo. My position is six two degr...
A.
Keeping in contact with Motor Vessel Birth on VHF 16.
B.
Giving some instructions to Motor Vessel Birth.
C.
Sending a tug to assist Motor Vessel Birth.
D.
Sending a line boat to help Motor Vessel Birth at once.
【单选题】S1:Pan-Pan Pan-Pan Pan-Pan. New Harbour Control, New Harbour Control, New Harbour Control, New Harbour Control. This is Motor vessel Birth. Call sign Delta Alpha Mike Kilo. My position is six two degr...
【单选题】S1:Pan-Pan Pan-Pan Pan-Pan. New Harbour Control, New Harbour Control, New Harbour Control, New Harbour Control. This is Motor vessel Birth. Call sign Delta Alpha Mike Kilo. My position is six two degr...
C.
Mooring lines are broken.
【单选题】把原来1000—2000m的长轨条焊接延长,使长轨条长度到达或接近两个车站之间的的区间长度,这种形式的无缝线路叫()。
【简答题】滑坡的防治原则是什么?滑坡的防止措施有哪些?