【单选题】The electronic digital governor is virtually maintenance free. There are no moving parts to wear and the accuracy attainable is far ______ the mechanical governor.
【简答题】验收发电机时,检查其有无机械和电路故障,可采取()试验?When checking and accepting the generator, check whether there are mechanical and circuit faults. () test can be carried out.A. 负载loadB. 启动startC. 空转idlingD. 手动manual