2 3 example essay topic

... 5 99137030: . 9-91: H 2000 4.1... 1. Now we know neutrino to have, a rest mass of about 30 electron-volts.

30 -. 2. The properties of the new material, are known to be determined next month... 3.

Conduction is known to be a process, by which heat is transmitted through, a substance by molecular activity... 4. All the changes of temperature and changes of state to be discussed are, shown by a graph in Fig. 2., 2.2. (.

1. Working with machines, sharp tools, , , motors one must always be careful., . 2. The stream of electrons moving along, , the conductor is called electric current... 3. Powerful nuclear ice-breakers being built in our country, we begun a new, chapter in the history of Arctic exploration... 3...

1. If you had translated the article, you, could have used valuable data in your work... 2. If the quality of equipment were higher, , the results of the experiment would be more accurate...

3. If would be impossible to explain chemical phenomena without using the. laws of physics. 4.1, 2, 3 4. Rescue from space...

The test of the international space search-and-rescue system COSPAS-SARSAT have been going for five years. Its members are the USSR, the USA, France and Canada. Specialists believed that all these years would be spent on technically improving the system. - COSPAS-SARSAT.

-, , ., . But somewhat unexpectedly for its makers the COSPAS-SARSAT system got down immediately to the fulfillment of its direct duties - rescuing people in distress. The first stellar rescuer is known to be the Soviet satellite Kosmos-1383, equipped with a radio-electronic complex for detecting the signals of ships and aircraft., COSPAS-SARSAT -., , -. Today three satellites - two Soviet and one American are already in operation. The system having demonstrated excellent performance in actual distress situations, we " ll continue to cooperate more widely in its application.

- -. Soon there will be ten stations for receiving distress information: three in the USSR, three in the USA, and one each in Canada, France, Britain and Norway. By 1983 the COSPAS-SARSAT system had already saved 120 people 1983 COSPAS-SARSAT 120.5... What is the aim of biological experiments carried out in space The aim of biological experiments are - developing the technology of growing. plants in space conditions. 5.1. should, would. 1.

In the future new alloys and synthetic materials should replace the metal, we used today... 2. If the voltage increased electrons, would acquire an energy high enough, , to ionize neutral molecules which they, collide with... 3. It wold be impossible to simple the production of aluminium without using, the electrothermal method... 2...

1. Many sources of X-rays are supposed, - to exit in the Universe, but the technical, difficulties of observing them are great. -. 2. Having subjected crystals to -, X-radiation the scientists could obtain materials with special properties... 3.

Welded joints were X-rated to -, examine the strength of welding... 4. Architects have designed and built, houses to be heated by solar radiation... 5. Radioisotopes being produced in, atomic reactors, the engineers began to, apply them for physical measurement. and in radiography. 3. since, for either... or.

1. Man has recognized that sunlight is a, , powerful source of energy since ancient -. times. 2. Hydroelectric energy requires no fuel, for electricity is produced from the energy of falling water... 3. In the field of chemistry lasers are used either for diagnostic purposes or for producing chemical changes...

4.1, 2 3. Biochemistry... The chemistry of life, or "biochemistry" as chemists call it, is an area in which the classical fields of chemistry and biology meet. It can be called "molecular biology". Biochemistry is the study of the structures and reactions of the thousands of compounds involved in life process.

Biochemistry is considered to be the most complex area of chemistry., , , , . - . -, ., . Living things represent the most efficient, sophisticated, compact chemical "factories" ever known. How, for example, do cells of the body know when to divide and multiply into new cells having the same characteristics as the original cells When the body is afflicted by disease or by a wound how does the body protect itself and repair the damage We know these processes to involve thousands of different chemical compounds... When we compare the nervous system to man-made electronic computers the efficiency and complexity of the biological systems become even more impressive.

Despite great advances in computer technology, the greatest computer ever built is almost insignificant being compared to a human brain weighing little more than a kilogram. A computer can perform mathematical operations millions of times faster than a person, but think of some of the things the nervous system can do. For example, it can cause your arm to reach out and touch an object. The brain can translate signals from the retina of the eyes into three dimensional color images. It can translate a series of frequencies detected by the ear into thoughts whereas a computer can only perform operations being programmed by a person. As to the storage capacity the brain really wins out.

The largest computers have storage capacity of about one million "words" but some experts believe the brain to store up all the signals it receives., , , ., , , , , ., ., , , . 5... What phenomena are not understood in biochemistry There are chemical processes in cells... 6.2, 3 4. Money under Socialism...

Money is known to perform its usual function under socialist commodity production. All commodities are compared in value to the money commodity, so that it serves as a measure of their value. Money performs its function as a means of payment: when wages and salaries are paid to factory and office workers, when socialist enterprises get loans from the State Bank and then pay them off, when money income is distributed among collective farmers, etc... We know money also to be a means of accumulation. Plants, factories and state and collective farms keep their earnings and spare money at the State Bank.

The state uses these accumulations and savings to expand production, create reserves and provide credits to various enterprises and organizations., 2.1-, . In a commodity exchange money plays, the role of a medium and measure of, , value, a commodity expressing the. value of all other commodities 3... What is an effective method of economic management Money control over the performance of socialist enterprises is an effective - method of economic management.