Short-wave radios that can receive and transmit signals are used by pilots, the police, and amateur operator .

Câu hỏi liên quan

• Choose the correct answer to complete the sentence. "I have advised you on _____ to cut down your energy use"

• The Maelstrom is a swift and danger current in the Arctic Ocean.

• Choose the best option:

  The Earth is one of the ___ in the solar system.

ZUNIA12

• The most visible remind of the dose relationship between the United States and France is the famous Statue of Liberty, which stands in New York Harbor.

• The ozone layer must be protected because it shields the Earth from excessive ultraviolet radiations

• If you make a five-days trip across the Atlantic Ocean, your ship enters a different time zone everyday.

• When I walked into my office, I found Tom was using my telephone

• Most sand dunes are always in motion as wind pushes sand upward one side of each dune, over the top, and down the other side.

• Despite its smaller size, the Indian Ocean is as deep the Atlantic Ocean.

• The steam engine is usually thought of as a relative modern invention, but the Greeks built a kind of steam engine in ancient times

• Dinosaurs are traditionally classified as cold-blooded reptiles, but recent evidence based on eating habits, posture, and skeletal structural suggests some may have been warm-blooded.

• Those of us who have a family history of heart disease should make yearly appointments with their doctors.

• While the sun is the major source of ultraviolet rays, it is not the source only

• ................... blue is .................. color I like. 

• The dentist gave me a check-up and then telling me I needed two teeth.

• To receive a degree from an American university, one must take many courses beside those in one’s major field.

• After searching for evidence in the house, the police concluded that the thief must have come in through the window and stole the property while the family was asleep.

• There are many ways to preserve fruit, for example freezing, canning and to dry

• Margaret Mead achieved worlduide famous through her studies of child-rearing, personality, and culture

• If we come home on time, our step-mother will be angry.