室内热环境标准:夏季26-28C,冬季为()。
参考答案:18-22C
Lucy has ________ all of the goals she set for herself in high school and is ready for new challenges
at university.[ ]
A. acquired
B. finished
C. concluded
D. achieved
下列有关小儿血红蛋白种类的描述,错误的是
A.胎儿6个月时HbF占90%
B.出生时HbF占30%,HbA约占70%
C.1岁时HbF不超过5%
D.2岁时HbF不超过2%
E.成人HbF不超过2%