电力系统中的电力设备和线路应有主保护和(),必要时,可增设辅助保护。
A.副保护
B.附加保护
C.后备保护
D.其他保护
参考答案:C
I治疗后早发甲减一般指用药后多久发生()
A.1年内
B.2年内
C.半年内
D.1月内
E.3月内
Are changes in accounting principles and extraordinary items treated similarly in accordance with U.S. Generally Accepted Accounting Principles and International Financial Reporting Standards Accounting principles Extraordinary items()①A. Yes Yes ②B. NoNo ③C. Yes No
A. ①
B. ②
C. ③