How many years is the average service life of electrical appliances 1. The average service life of electrical appliances is () years A、8 B、10 C、11 D、12

How many years is the average service life of electrical appliances 1. The average service life of electrical appliances is () years A、8 B、10 C、11 D、12

Regulations for the implementation of the enterprise income tax law of the people's Republic of China
Article 60 unless otherwise stipulated by the financial and tax authorities under the State Council, the minimum period for calculating depreciation of fixed assets is as follows:
（3） Five years for appliances, tools and furniture related to production and operation activities;

Among the following electrical equipment, the one using current thermal effect is? A, motor B. rice cooker
Among the following electrical equipment, the one using current thermal effect is? A, motor B, electric cooker C, electric fan D, television

B

The average age of using electrical appliances is several years

I don't know what you mean by electrical appliances, but general appliances have a certain life even if there is no fault. 1. Appliances used for more than 10 years: TV: 10 years; electric heater: 18 years; refrigerator: 13-16 years; electric fan: 16 years; gas stove: 16 years; washing machine: 12 years; electric water heater: 12 years; micro

The following electrical appliances with normal working current of about 0.5A are a. air conditioner B. refrigerator C. electric water heater D. electric rice cooker

According to the principle, a, B and D are OK. The working current of variable frequency air conditioner and variable frequency refrigerator may be as low as 0.5A, which is also the current when the electric rice cooker is keeping warm
I think the answer is a

What is the power rating of a small bulb on a desk lamp in a home circuit?

There are many kinds of models and specifications, you can screw them down and have a look. Generally, there are 15W bulbs

How much current does the lamp pass when it works normally
Such as the title

It's usually 0.05A

Please design a circuit to change the rotation of small fan with sliding rheostat, and explain how to change the rotation speed of small fan

As shown in the figure
Moving the slide to the right, the resistance increases, the current through the small fan decreases, and the speed decreases
Moving the slide to the left, the resistance decreases, the current through the small fan increases, and the speed increases

What symbol is the fuse in the circuit diagram?

Fu common electrical text code circuit diagram common symbols: AC AC DC Fu fuse g generator m motor Hg green light HR red light HW white light HP light plate K relay KA (NZ) current relay (negative sequence zero sequence) kD differential relay KF flash relay KH thermal relay km intermediate relay KOF out

Daily life experience tells us that the connection method between electric equipment such as electric lamp, socket, color TV and refrigerator is: a
Our daily life experience tells us that the connection method between electric equipment such as electric lamp, socket, color TV and refrigerator is as follows:
A. It must be in series;
B. It must be parallel;
C. It can be in series or in parallel;
D. Lamp and socket should be connected in series, color TV and refrigerator should be connected in parallel
Why not D?

All electrical appliances are connected in parallel. If they are connected in series, they are led in from one end, then led out from the other end, and then connected with the next electrical appliance. Obviously, the electric lamp and the socket are also connected in parallel, otherwise if an electrical appliance is inserted into the socket, the electric lamp will turn dark or not on

The experience of daily life tells us: what is the connection mode of electric appliances such as lamps, refrigerators and sockets at home______ The street lights on and off at the same time. How are they connected______ (select "series" or "parallel")

(1) The electric lamps, refrigerators, sockets and other electrical appliances in the home are connected in parallel; (2) according to the characteristics of the parallel circuit, they work independently and have no influence on each other. Although the street lamps on the road are on and off at the same time, when one lamp breaks down, other lamps can be on, so the street lamps are connected in parallel