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Sin título
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Preguntas del test (25)
1Machines are objects that we use to save time and energy.
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2There are two kinds of machines by their complexity: simples or complex.
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3The machines never use a person´s energy.
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4The machines can use wind or water energy.
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5Many machines use electricity or electrical current.
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6The most of cars need combustible fuel to work. It's the energy for them.
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7Wheels, pulley are complex machines.
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8Mechanical machines are used to lift light objects but we don't use that to produce movement.
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9Machines make the work harder for workers.
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10We can find two kinds of mechanical machines: Manual and Automatic.
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11Machines make our life easier in the communication.
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12The structure of a machine is the skeleton of the machine.
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13The housing doesn't protect the machine.
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14Automatic machines that produce movement have a motor engine.
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15Electrical circuits and electronic circuits direct the energy to the motor and other parts.
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16Sensors don't enable the machine to receive information from the outside or inside of the machine.
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17An antenna isn't a sensor.
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18Indicators and screen give us information about how the machine is functioning.
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19Operating parts are the moving pieces os a mechanical machine.
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20Wheels and axles aren't an operating parts.
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21Gears don't need teeth or cogs to transmit movement.
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22Machines can do the work of more than one person at once.
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23Modern transportation allows us to travel far away.
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24The combustible fossil in different types of transportation is perfect for the environment.
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25Machines haven't done advances in health.
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Información
- Descripción
- Test sobre Sin título, creado por Sara Álvarez el 15/02/2015.
- Autor
- Sara Álvarez
- Idioma
- Español
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- Valoración
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