A.I am altering my course to starboard B.I am altering my course to port C.I am operating astern propulsion D.I am operating ahead propulsion
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The winch at Hatch No.3 is()trouble.
A.at B.in C.on D.over
单项选择题The term PROLONGED BLAST refers to().
A.a blast of from five to seven seconds' duration B.a blast of from five to six seconds' duration C.a blast of from four to six seconds' duration D.a blast of from six to seven seconds' duration
单项选择题The ship will be()demurrage soon.
A.at B.for C.in D.on
单项选择题The ship is now down()head.
A.on B.by C.in D.for