Nowadays, such electric ______ as electric cookers, electric heaters, electric ovens are getting into ordinary homes.
A: instruments
B: appliances
C: equipment
D: apparatuses
A: instruments
B: appliances
C: equipment
D: apparatuses
举一反三
- Electric heaters have the electric energy _____________ (transform) into heart.
- The domestic electric ______ promise to free the housewives from the burden of the hard housework. A: apparatus B: appliances C: instruments D: equipment
- This heater consumes _______________ that one does. A: electric power twice as great as B: greater twice electric powe C: twice as great electric power as D: twice greater electric powe
- (10分)This heater consumes _______________ that one does. A: greater twice electric power B: electric power twice as great as C: twice as great electric power as D: twice greater electric power
- 4-3。What is the working principle for LED？（ ） A: convert electric to light B: convert light to electric C: convert electric to heat