家在线测试 Test about Cargo Properties v5.0

在线测试： Test about Cargo Properties v5.0

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问题 1 从 11

A liquid at different temperatures is made to flow through identical orifice passages. The one with the easiest flow will have liquid at:

The lowest temperature.

The highest temperature.

The average temperature.

During a cargo voyage, the inert gas pressure in the tank will decrease as a result of:

Increasing viscosity level during the voyage.

Leaks, which always are present due to the pipeline system, gauges etc.

Inert gas being absorbed by the liquid (diffusion).

Hydrocarbons belongs to a chemical group named:

Carbohydrates.

Alkanes.

Organic Substances.

Light products are more volatile than heavier products. This means, that light products:

Have higher viscosity.

Have higher flash point.

Have lower viscosity.

On a fully refrigerated ship, gas would be transported:

In insulated pressure tanks to keep the gas cold.

In high viscosity tank domes.

Close to its atmospheric boiling point.

The O2 meter shows an oxygen level of 18,3 % in a tank, that you are to inspect. This means, that:

You cannot enter the tank, because the body requires air with the content of 21 % oxygen for normal breathing.

You can enter the tank safely, because the body only requires air with the content of 17,8 % oxygen.

You cannot enter the tank, because the body requires air with the content of 22,8 % oxygen for normal breathing.

The flammable range in air of ethylene is 3 % – 32 %. This means, that:

Ethylene vapour is flammable when there is 3 % – 32 % oxygen present in the mixture.

Ethylene vapour is proportion 3 % – 32 % to air, is flammable.

Ethylene vapour is flammable when there is 3 % – 32 % air present in the mixture.

The gases present in crude oil are termed:

Natural Gas Liquids (NGL).

Liquefied Petroleum Gas (LPG).

Inert Gas.

The molecular structure below is named:

Cyclohexane.

Benzene.

Carbohydrate.

Threshold Limit Value is:

A measure of the weight of a substance (kg/dm3).

A measure of the toxicity level in the atmosphere.

The maximal partial pressure (%).

What information should always be to find on the datasheet of a substance?

The price and quality of the product.

Information regarding safe handling of the product.

Production date and level of flammability.

Добро пожаловать! Оцените уровень своих знаний с помощью стандартной системы оценки экипажа CES (Crew Evaluation System) по теме "Liquid Cargo Properties” или “Свойства перевозимых грузов”. Данный тест поможет вам, как морскому специалисту, подготовиться к сдаче экзаменов, получению сертификата компетентности или аттестата.

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