振兴装备制造业，首先要振兴重大技术装备，努力突破( )，提高重大技术装备研发设计、核心元器件配套、加工制造和系统集成的整体水平。
A. 政策约束
B. 国际技术限制
C. 核心技术
D. 资金不足
By saying that he became sort of dependent on the industry, Mark Amerika meant that ______.
A. he could not help but set his Grammatmn and others in Industrial Revolution
B. conventional writers had been increasingly challenged by high technology
C. much of his Grammatron had proved to be cybernetic dependent
D. he couldn't care less new advance in Computer software
CT对比剂注射方法中，比较适用于头颅 CT扫描的注射方法是
A. 静脉滴注法
B. 静脉团注法
C. 静脉滴注团注法
D. 静脉团注滴注法
E. 静脉多次团注法
把< )中上游地区、风沙区、草原区作为生态环境建设的重点，力争在短期内有所突破。
A. 黄河
B. 长江
C. 珠江
D. 黄河、长江
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