Помогите пожалуйста, по британскому нужно подчеркнуть Participle 1 и Participle 2

The new engine is being tested in the laboratory

Aluminium is used (is used - Present Simple Passive) due to its low cost and high efficiency.A great progress in electronic industry has been achieved (has been achieved - Present Perfect Passive) due to semiconductors.The new engine is being tested (is being tested - Present Continuous Passive) in the laboratory

А вот на заключительное задание взгляни пожалуйста

выписать из текста эквиваленты к словам и словосочетаниям: поток электричества, трансформатор, неизменный ток, источник переменного напряжения, линия. ТекстCurrent is a flow of electricity through a circuit. There are two main types of current: direct and alternating. A direct current flows a conducting circuit in one direction only. It flows provided a direсt voltage source is applied to the circuit.An alternating current that changes its direction of flow through a circuit.

Alternating current flows in cycles. The number of cycles per second is called the frequency of the current.In a 60-cycle alternating current circuit the current flows in one direction 60 times and in the other direction 60 times per second. It is easy to transform a.c power from one voltage to another by a transformer. Transformers are also used to step down the voltage at the receiving point of the line to the low values that are necessary for use.When necessary a.c. can be changed into d.c.

but this is seldom necessary

поток электричества - a flow of electricityтрансформатор - a transformerпостоянный ток - direct currentисточник переменного напряжения - alternating voltage sourceлиния - a line

Спасибо дружище, ты меня очень очень выручил

Я девченка ))) Фортуны )))

Умная значит девченка!!!