单项选择题
A.the resistor next to the negative terminal
B.a short circuit
C.the resistor next to the positive terminal
D.an open circuit
单项选择题 The division of kilowatt load between two paralleled alternators is determined by the （）
单项选择题 The division of the kilowatt load between two AC generators operating in parallel is controlled by the settings and characteristics of the （）.
单项选择题 In a three-phase circuit, the phase voltages are （）