你可能感兴趣的试题
affect effect power control
thousandth ( 10 to the - 3rd power) millionth (10 to the -6th power) billionth ( 10 to the - 9th power) trillionth (10 to the - 12th power)
It makes up five per cent of all electricity consumption in the United States. Electrical devices that have internal or external clocks consume standby power. Standby power is not of significance compared to the whole consumption of electricity. Standby power is important to maintain the normal functions of electrical devices.
something nothing anything everything
one thousandth (10 to the -3rd power) one millionth ( 10 to the -6th power) one billionth ( 10 to the -9th power) one trillionth (10 to the -12th power)
3-5 watts 13-30 watts 300-700 watts It depends.
thousandth (10 to the -3rd power) millionth (10 to the -6th power) billionth ( 10 to the - 9th power) trillionth ( 10 to the - 12th power)
they carl recharge their batteries that have been exhausted. they do not interfere with the normal use of electricity in the house. their users do not have to bother to turn them on every time they want to use them. they can stay warmed up and are ready for use at any moment.
turn on turn off turn up turn down
affect effect power control
Supportive Critical Indifferent Worrie
the electricity thief who steals electricity at one’s home. electricity to power electrical appliances even when they are turned off. electricity to power electrical appliances when they are turned on. electricity waiting to be used when electrical appliances are turned of
tired amazed bored satisfied
something nothing anything everything