A familiar example of this type of current would be a battery. Batteries produce voltage and current in a single direction. If you connect a miniature bulb to a battery, the bulb will generate a uniform amount of light as long as there’s power remaining in the battery, and that is a ...
解析 C。解析:文章中提到“Another common symbol is the light bulb, which is represented by a circle with a cross inside.”,所以灯泡的符号是一个里面有个叉的圆,A 选项里面有个星星不是,B 选项一个里面有波浪的长方形不是,D 选项一个里面有个点的菱形也不是。
than a trowel, the transplanter can break just the amount of ground needed for the planting, and also work comfortably in a flowerpot. Some transplanters have an end that is somewhat squared to enable scooping soil from within the confines of a narrow hole, while others come to a point....
With things like blood pressure pumps and bag valve masks, the squeeze bulb is used as a pump to force air. Squeeze bulbs can also be used for controlledof gases or fluids, with the user releasing the bulb enough to suck something up. For example, squeeze bulbs are sometimes used to cle...
also called an intermediate base. The E17 base is considerably wider and won't fit into a socket made for a candelabra bulb even though the actual bulbs may be of similar height and shape. If you aren't sure of the size of your burned-out bulb and therefore don't know which to buy...
题目What is the light bulb used for ? A. Fun and exercise. B. Seeing in the dark. C. Changing the style of the shoes. D. Serving really cold ice-cream. 相关知识点: 试题来源: 解析 B 电灯的发明作用是照明,故选B. 反馈 收藏
A bulb socket is a fixture into which a light bulb is inserted and which transmits electric current to the bulb. A bulb socket is connected to some type of electric current, which can come from any number of sources, such as household current or battery power. Most people are familiar ...
What Is a Plot Type: Stories Come In 10 Types Stories have been told for thousands of years, and as they have evolved, they have started to fall into patterns, patterns we call plot types or story types. These types of plot tend to be about the same underlying, universal values and sh...
Thomas Edison is famous for inventing the light bulb. What is the English word for "灯泡"? A. Lamp B. Bulb C. Candle D. Flashlight 相关知识点: 试题来源: 解析 B。解析:托马斯·爱迪生因发明灯泡而闻名,“bulb”就是灯泡的意思。A选项“lamp”可以表示灯,但不如“bulb”准确表示灯泡;C选项“...
A LiFi bulb is a light bulb used in a rear-projection TV set to project the image onto the screen. The pros and cons of using LiFi...