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

Atmosphere laden with coal dust or grain dust caused by loading these cargoes（）.

Atmosphere laden with coal dust or grain dust caused by loading these cargoes（）.

Project（71）is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

Project ______is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

● Project（71）is an uncertain event or condition that, if it occurs, has a positive or a negative effect on at least one project objective, such as time, cost, scope, or quality.（71）

Some experts fear that these regulations will be so strict as to paralyze economic activities.

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.

According to the fourth paragraph, the discovery of some experts disapproves the belief that loyal customers

There are strategies typically deal with threats or risk that may have negative impacts on project objectives if they occur, some other strategies are suggested to deal with risks with potentially positive impacts. （）is a risk response strategy that may be adopted for either threats or opportunities.

Atmospheres laden with coal dust or grain dust caused by loading these cargoes（）.

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