能反应骨髓造血功能的是
A. 红细胞数
B. 网织红细胞数
C. 血红蛋白量
D. 血氧饱和度
E. 铁蛋白量
企业不可能也没有必要同时对付所有的竞争对手,只要能准确识别和应对主要竞争对手就足够了。()
A. 对
B. 错
---- to learn about human origins and evolution, the physical anthropologist studies fossil remains and observes the behavior of other primates.
A. Because trying
B. Do they try
C. There is trying
D. In trying
---- where the American craft movement seems to have flourished most vigorously, partly through its association with the Prairie School of Architecture.
A. Was the Midwest
B. The Midwest as
C. It was the Midwest
D. The Midwest being!