По содержанию углерода сталь ХВСГ является …

Ответы:

+ высокоуглеродистой

− низкоуглеродистой

− среднеуглеродистой

− качественной

Решение:

ХВСГ – инструментальная сталь, содержащая около 1 % углерода, т.е. по содержанию углерода она относится к высокоуглеродистым. Металлургическое качество стали определяется не количеством углерода, а содержанием вредных примесей – серы и фосфора.
ответ тест i-exam

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Strophantin is a white or yellowish powder. It is taken for acute cardiovascular insufficiency.
It is sensitive to light and it must be kept in amber containers. It is soluble in water and only slightly soluble in chloroform and ether.
Strophantin is very poisonous. Strophantin is used intravenously for its effects on the heart.

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Unlike digital computers - which started out as mechanical devices and then went through a brief electromechanical period during the 1930s, finally becoming electronic only in the 1940s - television was an electrical medium from the very beginnings.
Attempts to send images over distances with the use of electricity date to 1876, the year Alexander Graham Bell invented the telephone.

Airships are huge balloons with propellers to drive them, and they were once used to carry as many as 200 passengers.
The airships were filled with hydrogen, a light gas. However, hydrogen is also inflammable. There were several disasters in which airships caught fire, and they disappeared by the end of the 1930s.
However, airships are now flying again, but they are not common. They are lifted by helium gas, which does not catch fire.
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The rhizomes of rhubarb are collected from plants eight to ten years old. Then the rhizomes are dried either in the sun or in the ovens. After the drying operation the rhizomes are peeled. Rhubarb was used in China more than 4000 years ago. It was used by the Greek and Roman physicians and was used in Europe in the middle ages.
Rhubarb is used for its purgative action.

Most road-users recognize the necessity for all drivers travelling on the same side of the road, or stopping at traffic lights when they show red. Even if there was no punishment for these offences, the majority of drivers would still follow the Highway Code because they know it is the sensible thing to do. If a community did not have a system of law, the strongest person, or group of person, could dominate with arbitrary and unfair rules, or there could be anarchy.
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