水冷器启用时应先开(),后开()。
参考答案:冷却水;热流
With his work _________, he went home happily.[ ]
A. finishing
B. to finish
C. finished
D. had finished
糖尿病分娩期并发症包括()
A.手术产率增高
B.母高血糖状态
C.产程延长
D.产后出血
E.酮症酸中毒