sand
soft soil
stiff clay
heterogeneous soil
第1题:
AOR-E
AOR-W
POR
IOR
第2题:
有人在封闭舱室作业时,入口处至少有二人守护
救援设备放置在封闭舱室入口处
封闭舱室的氧气含量应不低于16%
封闭处所的的入口处不用悬挂警示牌
第3题:
①-④
①-③
④
①④
第4题:
1.24~1.27
1.28~1.30
1.15
1.83
第5题:
Ⅰ+Ⅱ+Ⅲ
Ⅱ+Ⅲ
Ⅰ+Ⅲ
Ⅰ+Ⅱ
第6题:
吸油管
回油管
泄油管
A和B和C
第7题:
1.05
1.1~1.15
1.5
1.2~1.25
第8题:
能上升,能下俯
能停止,能下俯
能放下,能上仰
能上升,能停止
第9题:
减小
增大
无关
不确定
第10题:
Liquids with different viscosities will always have the same specific gravity
Liquids with different viscosities will never have the same specific gravity
Viscosity and specific gravity are directly proportional
Viscosity and specific gravity are not related in that one does not define or limit the other