单选题On a bulk chemical carrier，water should NOT be used as an extinguishing agent to fight a fire if the water may come into contact with the chemical called（）.A acrylic acidB benzeneC oleumD vinyl toluene

When we meet a（军舰）_____, we should lower national flag

A.warship

B.boat

C.container ship

D.bulk carrier

Chemical Tankers are generally referred to the cargo ships constructed or adapted and used for the carriage of ________ ．

A.liquid chemicals in bulk

B.solid chemicals in bulk

C.chemicals in bulk

D.cargoes in bulk

What type of extinguisher should be used for an electric fire? ________

A.CO2

B.Form

C.Water

D.Water and Form

The type of carrier required to file a copy of freight tariffs would be the ______．

A.Common carrier

B.Tramp

C.Public vessel

D.Bulk carrier

Which statement about entry into a space that has been sealed for a long time is TRUE ________．

A.A tank that has been used to carry hazardous liquids should be tested for oxygen content，toxicity，and explosive gases

B.You can safely enter the space without a breathing apparatus if the oxygen content exceeds 14%

C.The natural ventilation through the installed vents is sufficient to provide the proper oxygen content

D.The heat of the sun on upper ballast tanks，such as in a bulk carrier，may generate carbon monoxide

The cooling water of the diesel engine should be treated with chemical, because it contains .

A.alkali

B.acidity

C.salinity

D.impurity

The port State control officer may ensure that ______ are exhibited in conspicuous places throughout the ship．

A.survey planning document

B.muster lists

C.bulk carrier booklet

D.bulk carrier loading triangle

29． The writer thinks that people in large cities should __________ ．

A． stop the used water from getting into underground

B． only use the water from the rivers

C． make their used water clean again

D． use as much sea water as possible

Which vessel is most likely to be loaded full but not down ________．

A.A bulk carrier loaded with heavy ore

B.A bulk carrier loaded with steel

C.A break bulk vessel loaded with palletized cargo

D.A tanker loaded with heavy grain

______, as the chemical extinguisher agent, should be used for an electric fire.

A.dry chemical or foam

B.foam or soda acid

C.carbon dioxide or foam

D.carbon dioxide or dry chemical