The operation of paralleling two alternators requires（) to be equal and also in phaseA.th

The load between two steam－driven alternators operating in parallel may be adjusted by varying .

The history of fast food in America runs parallel to the invention of the car.（)

The division of the kilowatt load between two AC generators operating in parallel is contr

听力原文：（A) The oven operates with gas. （B) Two men are making repairs. （C) Both men are

●The two goals of an operation system are（71）and efficiency. （71）A.convenience B.quick C.o

When paralleling two AC generators, the frequency of the machine coming on－line, immediate