单选题If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）Ameans of rheostat the governor settingsBa balance coil excitationCadjusting the governor settingsDchanging excitation
单选题
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
A
means of rheostat the governor settings
B
a balance coil excitation
C
adjusting the governor settings
D
changing excitation
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