单项选择题
Generally speaking，the most favorable bottom for anchoring is（）.
A.very soft mud
B.rocky
C.a mixture of mud and clay
D.loose sand
点击查看答案&解析
相关考题
-
单项选择题
As a last resort，a tourniquet can be used to（）.
A.hold a victim in a stretcher
B.stop uncontrolled bleeding
C.hold a large bandage in place
D.restrain a delirious victim -
单项选择题
An uncontrolled flow of gas，oil，or other well fluids into the atmosphere is called a（）.
A.flow
B.breakout
C.kick
D.blowout -
单项选择题
All the traces are（）old ones.
A.clear
B.evident
C.obvious
D.apparently
