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问题 名词解释

肿瘤细胞减灭术

答案

参考答案：是指对晚期（Ⅱ期及其以上）肿瘤患者，应尽量切除原发病灶及转移灶，使肿瘤残余灶直径在2cm以下，必要时切除部分肠管、膀胱、胆囊或肝、脾等。

选择题

下列物质间的相互转化，不能一步实现的是（　　）

A．CO2⇌CaCO3

B．O2⇌CO

C．CO2⇌H2CO3

D．O2⇌H2O
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单项选择题

All of these applications will enhance the (130) of life and spur economic growth. Over half of the U.S. work force is now in jobs that are information (131) . The telecommunication and information sector of the U.S. economy now (132) for 12 percent of the Gross Domestic Product, growing much faster than any other sector of the economy. Last year the (133) in this sector exceeded 700 billion dollars. The U.S. exported over 48 billion dollars of telecommunication equipment (134) .

A．revenues

B．expenses

C．outputs

D．loss
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