Fill in suitable words from your active vocabulary: 1. May I ... you back to my earlier remarks on this subject?
2. If the ... surface is fairly old and extremely slick, make a mixture of
water and alcohol to brighten the surface.
3. ... also refers to a system of pipes and fixtures installed in a building
for the distribution of potable water and the removal of waterborne wastes.
4. Materials for ... interior electrical systems in buildings vary depen-
ding on type of occupancy and size of the building.
5. Modern construction techniques now rarely use wood building frames
and solid ... are used almost exclusively for their appearance.
6. This spot of ... has spoiled the whole appearance.
7. He was a good friend, a ... companion.
8. You must not use detergents that contain soap as well as you must
not ... the surface with the substances covering the surface (wax, polymer, etc.).

хз макс может оно и нафиг не надо нам

1. May I refer you back to my earlier remarks on this subject?
To "refer back" means to direct someone's attention back to something that was previously mentioned or discussed. In this case, the person is asking if they can bring up or mention something they said before.

2. If the surface is fairly old and extremely slick, make a mixture of water and alcohol to brighten the surface.
In this sentence, "slick" means very smooth or slippery. The person is suggesting that if the surface is old and slippery, you can use a mixture of water and alcohol to make it brighter or cleaner.

3. Plumbing also refers to a system of pipes and fixtures installed in a building for the distribution of potable water and the removal of waterborne wastes.
"Plumbing" refers to the system of pipes and fixtures in a building that transport clean drinking water and remove wastewater. This sentence is explaining the definition of plumbing.

4. Materials for wiring interior electrical systems in buildings vary depending on the type of occupancy and size of the building.
"Materials for wiring" refers to the materials used to install electrical systems in buildings. The sentence is stating that the specific materials used can vary depending on factors such as the type of building (residential, commercial, etc.) and the size of the building.

5. Modern construction techniques now rarely use wood building frames, and solid materials are used almost exclusively for their appearance.
"Wood building frames" are the wooden structures that make up the framework of a building. The sentence is explaining that in modern construction, wood frames are rarely used, and instead, solid materials are chosen primarily for their appearance or visual appeal.

6. This spot of dirt has spoiled the whole appearance.
In this sentence, "spot of dirt" refers to a small area or mark of dirt. The sentence is expressing that this small area of dirt has negatively affected or ruined the overall appearance of something.

7. He was a good friend, a loyal companion.
In this sentence, "companion" refers to a person who is a close and trusted friend. The speaker is describing someone as not only being a good friend but also a loyal and reliable companion.

8. You must not use detergents that contain soap, as well as you must not contaminate the surface with the substances covering the surface (wax, polymer, etc.).
The first part of the sentence is saying that it is important not to use detergents that contain soap. The second part is stating that you must also avoid contaminating the surface (e.g., with wax or polymer) with any substances that cover or coat the surface.