A.inherent characteristicsB.weightC.destinationD.danger……

单项选择题Cargoes which（）an explosive，inflammable，poisonous and corrosive nature are called dangerous goods.

A.is
B.are of
C.is of
D.are

单项选择题Can we change the location for the tung-oil（）that for the gum rosin?

A.by
B.for
C.into
D.with

单项选择题Calcium carbide and acetone are counteractive（）nature.

A.by
B.in
C.from
D.with

单项选择题At sea，on what occasion would you display two red lights at night or two black balls during the day?（）.

A.When vessel is on fire
B.When vessel is not under command
C.When vessel is carrying the dangerous cargoes
D.When vessel is restricted in her ability to maneuver

单项选择题Argon is classified as a（）.

A.corrosive
B.flammable gas
C.flammable liquid
D.nonflammable gas