A. 16DZ B. 3-4DZ C. RBC线圈电路
A. 10 hours in any 24-hour period B. 72 hours in any seven-day period C. ten hours in any 24-hour period D. 88 hours in any seven-day period
A. Ⅰ、Ⅱ、Ⅲ B. Ⅰ、Ⅱ、Ⅳ C. Ⅱ、Ⅲ、Ⅳ D. Ⅰ、Ⅲ、Ⅳ
A. 正确 B. 错误