A.The alternators are not generating the same voltages and should be adjusted on automatic voltage regulator rheostats
B.Alternator frequencies are different and should be adjusted on the governor speed controllers
C.Alternators are out of phase and should be tripped and paralleled again
D.One alternator has lost one of its phases
第1题
A.应当按住Ctrl键
B.只要按住Shift键
C.不必按键盘的键
D.必须按住Alt键
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