Collecting information and inquiring: (1) As shown in the above figure, Xiaoyun recorded the electricity consumption of his home for one week. The correct statement in the following statement is _ _ _

Collecting information and inquiring: (1) As shown in the above figure, Xiaoyun recorded the electricity consumption of his home for one week. The correct statement in the following statement is _ _ _ _ _ _ A.Monday. (1) According to the graphic analysis, the electricity consumption is more on Monday night than during the day; Judging from the electricity consumption on Thursday and Friday, the electricity consumption on Friday night is more than that on Thursday night;

The peak of electricity consumption on Monday, Tuesday, Wednesday, Thursday and Sunday is at night, and the peak of electricity consumption on Friday and Saturday is at night; Power consumption on Wednesday night is 2kW? h，

Therefore, option d is correct.

(2) According to the chart, Xiaoyun's electricity consumption on Monday night is about 1KW? H, the power of electrical appliances is P=Wt= 1kw? h 1h = 1KW；

Generally speaking, the power of TV is about several hundred watts, and the power of electric furnace is about 1KW, so this household appliance may be an electric furnace.

By "3000r/(kw? H) "It is known that when the watt-hour meter is switched from 1h to 3000r, the number of turns of 20min= 13h is 3000r× 13 = 1000r.

(3) When the washing machine works, it mainly converts electric energy into mechanical energy, and at the same time, some electric energy is converted into internal energy.

So, the answer is: (1) d; (2) 1KW； Electric furnace; 1000; (3) electricity; Machinery; Inside.