血红蛋白尿的特点是（）
A. 镜检有红细胞
B. 镜检有红细胞，并且尿隐血试验阳性
C. 镜检无红细胞。但尿隐血试验阳性
D. 镜检有红细胞，但尿隐血试验阴性
E. 镜检无红细胞，并且尿隐血试验阴性
脐带脱垂应采取的护理措施不包括( )
A. 吸氧
B. 胎心监测
C. 卧床休息，抬高臀部
D. 人工破膜
E. 做好剖宫产的术前准嵛
The passage is mainly about ______.
A. an approach to patents
B. the application for patents
C. the use of patents
D. the access to patents
Georges Valensi's patent lasted until 1971 because ______.
A. nobody would offer any reward for his, patent prior to that time
B. his patent could not be put to use for an unusually long time
C. there were not enough TV stations to provide color programmes
D. The color TV receiver was not available until that time
微信支付 
支付宝支付