Currently, the frequently used methods for ampoule cleaning mainly include:( ) A: the alternating pressurized water and gas jet B: ultrasonic washing C: water-dumping washing methods D: Washing-free ampoule

Equipment for washing A: low consistence washing machine B: medium consistence washing machine C: high consistence washing machine D: Diffusion washing machine

The housewives are ____ now. A: washing B: washing the dishes C: wash the dishes

My sister ______ the dishes at the moment. A: wash B: washing C: is washing D: washed

Jack was made______ the classroom for a week as a punishment. A: to wash B: washing C: wash D: to be washing

He was made _____ the truck for a week as a punishment. A: to wash B: wash C: washing D: to be washing

（） is used for washing and drinking.

What istrue of washing trains? A: Chemical washes are used daily. B: Washing occurs in the inspection shed. C: Detergent must be used with each wash. D: The washing machine recollects and reuses water.

( ) When someone ______ at the door. he _______ the dishes in the kitchen. A: knocks; was washing B: knocked; was washing C: has knocked; washed

The washing machine is under warranty.