单项选择题
A.A prohibition from loading a cargo from a country when the cargo may be a carrier of infectious diseases
B.Arrest of a vessel by legal authorities to satisfy claims through exercise of a maritime lien
C.Damage caused by riot of the population of a port
D.Losses caused by fines from polluting the harbor after malfunction of a piping system
单项选择题 What is an example of the term “Restraint of Rulers，Princes，or Peoples” in a marine insurance policy? （）
单项选择题 Vessels lying afloat at buoys for more than 24 hours should use anchor chain for（）and insurance wire for（）.
单项选择题 The wooden plug inserted in the vent of a damaged tank should be removed if you are going to （）.