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AN ILLNESS PREFERABLY OF AN INFECTIOUS NATURE SEIZING MORE THAN TWO PERSONS ON BOARD AT THE SAME TIME defines ______.
A.Disease of Crew
B.Crew illness
C.Group illness
D.Mass disease
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单选题AN ILLNESS PREFERABLY OF AN INFECTIOUS NATURE SEIZING MORE THAN TWO PERSONS ON BOARD AT THE SAME TIME defines（）.A
Disease of CrewB
Crew illnessC
Group illnessD
Mass disease
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