Systems of inbound and outbound lanes to promote the safe flow of vessel traffic in certain areas around the world are known as（）.

单项选择题The outer limit of the Traffic Separation Schemes is（）adjustment as necessary to complywith the port regulations.

A.subjecting
B.subject
C.subjected
D.subject to

单项选择题There are two classes of vessels which，to the extent necessary to carry out their work，do not have to comply with the rule regarding traffic separation schemes. One of these is a vessel（）.

A.engaged in fishing in a traffic lane
B.servicing a submarine cable
C.towing another
D.engaged on pilotage duty

单项选择题Traffic separation schemes established by the International Maritime Organization（）.

A.provide routing and scheduling procedures to reduce shipping delays
B.provide traffic patterns in congested areas，so that vessels can operate without having a separate lookout
C.provide inbound and outbound lanes to promote the safe flow of vessel traffic
D.prohibit vessels carrying hazardous cargoes from entering waters that are environmentally sensitive

单项选择题Is it clear（）traffic lane?

A.my entering
B.for my entering
C.for me to enter
D.I am entering

单项选择题The traffic lane（）suspended.

A.has
B.have
C.has been
D.have been