Which step should be taken,if possible,when the vessel must be abandoned because of a distress situation().
Alert the Coast Guard by using the survival craft's portable INMARSAT unit
B. Program the SART and EPIRB to transmit the vessel's location and situation
C. Place the SART and EPIRB in the“ON”position and secure them to the survival craft
D. No additional steps are needed as the SART and EPIRB will both automatically float free and operate properly
根据《建筑基坑支护技术规程》,下列关于建筑基坑工程勘察的叙述,不正确的是()。
A. 基坑外宜布置勘探点,其范围不宜小于基坑深度的1倍
B. 勘探点沿基坑边布置,其间距宜取15~20m
C. 基坑周边勘探孔的深度不宜小于基坑深度的2倍
D. 厚度大于2m的素填土应按规程规定进行抗剪强度试验
在新开拓区或新水平延深设计之前,需要编制()作为进行开拓设计和施工的地质依据。
进行带压不置换焊补,操作人员需要预先经过专门的培训,有较高()水平,方可进行焊补,绝对禁止焊工擅自进行带压焊补。