单项选择题
The winch is liable（）worn-out in this way.
A.getting B.to get C.to have got D.for getting
单项选择题 There are 65（）of grade No.3 rubber short.
单项选择题 There are salvage operations（）position 120.0N, 12.5E.
单项选择题 There are some navigational instruments（）the bridge.
