30.在一恆定頻率 AC 系統，虛功負載分配是何者調節而得? (A)發電機速度 (B)電壓調節器 (C)發電機傳動扭力 (D)發電機輸出電流

5. If an aircraft is operating at 40,000 ft. the pressurization ensures that (A)sea level pressure is maintained in the cabin. (B)the cabin pressure is progressively increased until the operational height is reached. (C)the cabin pressure above 10,000 ft. (D)the cabin pressure is equivalent to an altitude of less than 10,000 ft.