Вопрос № 605369 - Английский язык

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The skin is often called “the body’s first line of defence.” It acts as armour, resisting many germs that might harm the more delicate parts of the body. Any brain in the skin, even a pin prick, provides an opening for dangerous germs. Some germs enter the body through the nose and mouth and other natural openings. These areas provide warmth and moisture, in which germs thrive. When the membrane of the nose and throat becomes irritated, we cough or sneeze, blowing out the unwanted substances.
Other body liquids also provide a defence against disease. Tears, for example, wash bacteria from the eyes. Tears also contain substances that fight bacteria. Acid in the stomach kills many germs before they can reach other parts of the body.

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Homeopathy was invented in Germany about 200 years ago.
Homeopathic doctors believe that the symptoms of an illness are signs that the body trying to cure itself. To cure an illness, therefore, they give the patient something that produces the same symptoms in a healthy person.
Before a substance is used as a homeopathic remedy, it is tested by giving small doses of it to healthy persons to see what symptoms develop. For example, onions cause your eyes and nose to produce water. To cure colds, therefore, homeopathic doctors use an extract from onions. Sometimes, homeopathic doctors use dangerous poisons as medicines, but they dilute these many thousands of times so that they are harmless.
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What do onions cause your eyes and nose to produce?

Acute bronchitis is the disease of the bronchi. It is the inflammation of the bronchi. Its main symptom is a short painful dry cough associated with rapid respiration. The patient often complains of the pain in the throat, and behind the breastbone. He also feels discomfort in the chest and breathes heavily. Both dry and moist rảles are heard in the lungs.
The amount of the discharge from the bronchial mucous membrane is large. It accumulates in the bronchial tubes and makes the patient cough.
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Its main symptom is _______.

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A man 34-years of age had symptoms of bronchopulmonary disease, cough and fever which were controlled by penicillin. The X-ray examination of the chest showed a cavity in the left lung. The examination of the sputum for tubercle bacilli was negative. Two months later the patient re-entered the hospital, complaining of loss of weight.
The bronchopulmonary symptoms had become worse. He also had general cutaneous hypersensitivity and, for the preceding four days, constant bad headaches and left hemiparesis. The cerebrospinal fluid was normal. Within four days meningitis developed. The patient died in coma. An isolated small abscess of the upper lobe of the left lung and an isolated abscess of the right cerebral hemisphere were found at necropsy.
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Within four days _______.

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A delicate heart operation was performed in a hermetically sealed high-pressure chamber at the Moscow Research Institute for Clinical and Experimental Surgery.
The operated man was 48-years old. He had been hardly able to move because he was suffering from a serious congenital valve defect.
Now this operation is considered not a very complex one. But in this patient there was a serious risk of blood clotting in the brain.
The risk became quite insignificant when the operation was performed in the high-pressure chamber. At normal air pressure the amount of oxygen in a patient’s blood remains unchanged even if he breathes in pure oxygen. In a pressure chamber the oxygen amount in the blood increases considerably. In a pressure chamber the surgeon is able to operate with greater freedom on vital organs such as the brain, heart or blood vessels.
But it is very hard to work under high pressure. When operations are performed at seven or eight atmosphere pressures, the operation can only last two and a half hours. The personnel in the chamber have to be changed.
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In a pressure chamber the oxygen amount _______.

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Power dividers serve a multitude of circuit and system applications, from amplifiers to radar receivers. The power divider is housed in a hermetic enclosure with stainless-steel female SMA connectors. As these stripline power dividers feature such small physical dimensions, more than 20 power dividers can be fabricated from a single substrate. Unit-to-unit amplitude tracking is specified as better than ±0.6 dB, while standard unit-to-unit phase tracking is better than ±6 deg. at 18 GHz.
Insertion loss (in excess of expected power-division losses) is less than 2.0 dB.
The four-way power divider boasts amplitude balance of better than ±0.4 dB. Phase balance is better than ±5 deg. Designed to handle input power levels to 1 W CW, the power divider supports wide-dynamic-range signal processing.
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The four-way power divider boasts amplitude balance _________________.