Argon is classified as a（）.

单项选择题Another name for coal naphtha that would appear on a dangerous cargo manifest is（）.

A.benzene
B.tar
C.middle oil
D.toluene

单项选择题All of our export dangerous goods are（）the standard.

A.on
B.over
C.up to
D.above of

单项选择题All of our export dangerous cargo is（）examined before shipment.

A.though
B.through
C.thorough
D.thoroughly

单项选择题All handling and stowage of packaged hazardous materials on board a domestic vessel engaged in foreign trade shall be done under the supervision of（）.

A.a MSA Marine Inspector
B.an officer assigned to the vessel by MSA
C.a officer from CCS
D.the National Cargo Bureau

单项选择题According to the stowage factor of the cargo，my ship will（）take 350 more metric tons of cargo.

A.could
B.can
C.be able to
D.should