1) What are charges in static electricity a) proton electron b) low high c) up down d) inside outside 2) What is the use of static electricity a) photocopier b) lense c) vehicle d) water purifier 3) What is the unit of e.m.f a) volt b) ampere c) watt d) energy

аутор

Табела

Визуелни стил

Поставке

Промени шаблон

Врати аутоматски сачувано: ?