单选题Hanging a barge off means to（）.A moor a damaged barge to the bank and leaveB remove and deliver a loaded barge from a multiple towC remove a barge while locking throughD tow an empty barge astern

Functions aboard a tanker or tank barge such as connecting，disconnecting，and topping off must be supervised by ______.

A.any certificated tankerman

B.the Master of the vessel

C.the officer of the watch

D.the person designated as person in charge

You are making tow．A loaded，open-hopper barge with independent tanks has placards，with alternating red and white quadrants，located at each side and end．You inspect the barge and find slight traces of water in the wing voids due to condensation．What should you do?

A.Refuse to accept the barge until all wing voids are dry

B.Accept the barge and when weather conditions permit run with the wing voids open to ventilate the spaces

C.Accept the barge and periodically check the wing voids

D.Return the barge to the fleet and depart without the barge

"Switch off the phone"means().

A、turn off

B、give off

C、send off

D、run off

The sign used to caution persons approaching the gangway of a tank barge during cargo transfer reads ______．

A.Warning，Keep Off，Stay Clear

B.Danger，Do Not Board

C.Warning，No Smoking，No Open Lights，No Visitors

D.Dangerous Cargo Being Transferred

Hanging a barge off means to ______.

A.moor a damaged barge to the bank and leave

B.remove and deliver a loaded barge from a multiple tow

C.remove a barge while locking through

D.tow an empty barge astern

Which barge in your tow would require a cargo information card to be carried in the pilothouse ________．

A.A tank barge with a sign reading No Visitors，No Smoking，No Open Lights

B.An open hopper barge carrying coal

C.A gas-free chlorine barge

D.An empty（not gas-free）barge that last carried benzene

此题为判断题(对，错)。