在额定功率因数下,电压偏离额定值()范围内,且频率偏离额定值±2%范围内,发电机能连续输出额定功率。
A、±5%;
B、±8%;
C、±10%;
D、±12%。
参考答案:A
So upset was he about himself that he decided to take a few days to________himself. [ ]
A. revolve
B. renew
C. refresh
D. reform
品质的终级目标是()。
A.零缺陷
B.6sigma水平
C.顾客100%满意
D.99%的良率