The purpose of the author in writing the text is to
A. criticize the consumers for not paying much attention to DTVs.
B. illustrate the rapid development of US TV technology.
C. show the present situation and vast market potentials of DTVs.
D. compare the differences between traditional analog sets and DTVs.
查看答案
In the text, the vaccine research against HPV shows that
A. the pharmaceutical companies can hardly make profits from new drugs.
B. it is very wasteful to invest so much money in a new drug.
C. the innovation and high prices are always connected.
D. Americans should pay more attention to those little pills.
当验算模板及其支架的刚度时,对结构表面外露的模板,其最大变形值不得超过模板构件计算跨度的()。
A. 1/100
B. 1/200
C. 1/300
D. 1/400
建筑工程施工安全技术
本部分共10小题,每小题1分。每题的备选项中只有一个最符合题意。
基坑支护与降水工程、土方开挖工程、模板工程、起重吊装工程、脚手架工程、拆除、爆破工程应编制()。
A. 施工组织总设计
B. 单位工程施工组织设计
C. 分部(分项)工程施工组织设计
D. 专项施工方案
外商投资举办的产品出口企业,在依照税法规定免征、减征所得税期满后,凡当年出口产品产值达到当年企业产品产值70%以上的,可按税法规定减半征收,此种情况适用的税率有()。
A. 0.3
B. 0.33
C. 0.24
D. 0.15