Deficient oxygen content inside a chain locker can be detect

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

Inerting means ______．

A.The introduction of inert gas into a tank with the object of reducing the oxygen content to below 8% by volume

B.The introduction of inert gas into a gas free tank for the purpose of reducing the oxygen content to below 8% by volume

C.The introduction of inert gas into a cargo tank during cargo discharge to replace the volume of discharged cargo

D.All of the above

In the experiment, the burning inside the bottle can___.

A. equalize the air pressure inside and outside

B. make a seal in the neck of the bottle

C. finish up the oxygen inside the bottle

D. produce more oxygen inside the bottle

Deficient oxygen content inside a chain locker can be detected with ______.

A.litmus paper

B.a combustible gas indicator

C.an oxygen breathing apparatus

D.an oxygen indicator

The perforated，elevated bottom of the chain locker，which prevents the chains from touching the main locker bottom and allows seepage water to flow to the drains，is called a ______．

A.cradle

B.draft

C.harping

D.manger

Which statement about entering into a tank which has been sealed for a long time is TRUE ________．

A.The tank should be tested only once to ensure the oxygen content is at least 14% before entry

B.The tank must be tested at frequent intervals to ensure that hazardous gasses have not regenerated

C.The tank need not be tested for oxygen content if it is ventilated for more than 24 hours

D.If the oxygen content tests at less than 12% you should wear an approved gas mask

The opening in the deck beneath the anchor windlass that leads to the chain locker is the ______．

A.Hawse pipe

B.Fall pipe

C.Drop-pipe

D.Spill pipe

A. A job chain can contain a nested chain of jobs.

B. The jobs in a job chain cannot have more than one dependency.

C. A job of the CHAIN type can be run using event-based or time-based schedules.

D. The jobs in a job chain can be executed only by using the events generated by the Scheduler

What can cause a lack of oxygen in a chain locker ________．

A.Absorption

B.Osmosis

C.Evaporation

D.Oxidation