问题 多项选择题

依据现行《火灾自动报警系统设计规范》的规定,火灾应急广播扬声器的设置,应符合()

A.民用建筑内扬声器应设置在走道和大厅等公共场所

B.每个扬声器的额定功率不应小于3W

C.在环境噪声大于60dB的场所设置的扬声器,在其播放范围内最远点的播放声压级应高于背景噪声10dB

D.客房设置专用扬声器时,其功率不宜小于3W

答案

参考答案:A, B

单项选择题
阅读理解

阅读理解。

     A lamp is more than a light. Lamps allow the owner to add to the design of a room. They are

very functional and sometimes the only source of light in a room. There are many types of lamps,

and of course they come in many styles and colors to fit anyone's home. Lamps can be soft and

inviting or bright and useful. Floor lamps are often tall, thinly shaped lamps that bring light to a large

area by cupping the bottom of the bulbs and forcing light up. Table lamps tend to force the light

down and out to lighten up a smaller, more private space. But, that doesn't mean that you can't

find a lamp that fits your needs as well as your tastes. In fact, you can even have lamps made to

order to match your desired look.

     But, before you decide to make that decision, check out the lamps in department stores and

specialty stores. While most home improvement stores offer a wide variety of floor lamps, hanging

lamps, and table lamps, you can find an even larger selection in a lighting store. There you will be at

a loss about all the different choices you have. There will be choices in every style imaginable. If you

still can't find what you are looking for, check contents and even the Internet. Specialty stores

nationwide will ship lamps and accessories (配件) to you.

     Adding some extra light to your home may have been your early search when trying to find a

lamp, but you will soon see that there is more to look for in a lamp. The design will fit your home

and the color should match your home. The details on the lamp or lamp shade can even be found

to match your furniture, tables, or other items in your home. Finding a great lamp is a fun adventure

into the world of lighting.

1. The purpose of the passage is ______.

A. to tell us how to choose lamps for our home

B. to inform us of the variety of lamps produced in stores

C. to tell us that different lamps have different usages

D. to show us the great part lamps play in our life

2. According to the author, ______.

A. all the floor lamps are tall and thin

B. table lamps can help you avoid being seen

C. lamps can be attractive in a way

D. none of the lamps will suit you

3. What's the author's attitude towards having a lamp made to order?

A. That's just what he wants to suggest.

B. He suggests seeking lamps in stores.

C. He thinks it a waste of money.

D. He advises making lamps by oneself

4. What should you do if you plan to buy a floor lamp?

A. You should buy a floor lamp at last.

B. You should match the lamp with your room.

C. You should find some accessories to it.

D. You should think of nothing but a floor lamp.