单项选择题
A. in position B. on the location C. of the position D. at the place
We must（）the mooring lines when the tide rises and fall...
单项选择题We must（）the mooring lines when the tide rises and falls.
A. slack away B. take on C. take in D. adjust
Mooring lines（） were let go.A. for and aftB. from and a...
单项选择题Mooring lines（） were let go.
A. for and aft B. from and aft C. fore and aft D. for and after
Lower the（）to the tug.A. towing lineB. slip lineC. brea...
单项选择题Lower the（）to the tug.
A. towing line B. slip line C. breast line D. spring line
