你可能感興趣的試題

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

單項(xiàng)選擇題

Argon is classified as a（）.

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

Calcium carbide and acetone are counteractive（）nature.

你可能感興趣的試題

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

Argon is classified as a（）.

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