Duty is an act or a course of action that people __________you to take by social customs, law or religion.

Duty is an act or a course of action that people ______you to take by social customs, law or religion.

 ______ twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

从学科发展渊源来说，大学教学论是教学论在高等教育领域的延伸和拓展，是教学论学科新近开辟的研究领域。

A man was sighted as he fell overboard. After completing a Williamson turn，the man is not sighted. What type of search should be conducted?（）

Course directed by the OSC or CSS to be steered at the beginning of a search is（）.

Course directed by the OSC or CSS to be steered at the beginning of a search is（）.

Course directed by the 0SC or CSS to be steered at the beginning of a search is（）.

A mark or place at which a vessel comes under obligatory entry，transit，or escort procedure is know as（）.

A reaching course is one in which the wind（）.

（）generally indicates that a gale or storm is approaching.