电气设备可以在保留主保护条件下运行,允许停用后备保护。
参考答案:对
Then people could spell words in different ways _____ you might find interesting.
A. how
B. what
C. in which
D. which
危害健康的行为有()
A.合理营养
B.吸烟
C.规律生活
D.性行为
E.精神过度紧张