试题与答案

为缓解石油紧缺,我国于2002年开始将玉米转化为燃料乙醇的技术产业化,俗称“粮变油”

题型:单项选择题

题目:

为缓解石油紧缺,我国于2002年开始将玉米转化为燃料乙醇的技术产业化,俗称“粮变油”,现在已成为比较成熟的产业。2004年到2006年我国连续三年粮食丰收,2007年国际石油价格又创新高,但国家发展改革委员会却通知停止以粮食生产燃料乙醇的项目。

以下哪项陈述如果为真,能够最好地解释上述看似矛盾的现象?()

A.2002年的“粮变油”项目是一项消化陈化粮的举措

B.“粮变油”项目会影响我国粮食安全,粮食安全比缓解石油紧缺更重要

C.我国已经研究出用秸秆生产燃料乙醇的关键技术

D.在我国玉米种植区,近年来新建的乙醇厂开始与饲料生产商争夺原料

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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Developed by the China Academy of Space Technology under the China Aerospace Science and Technology Corporation, the satellite is the country's second data relay satellite.The first, Tianlian I -01, was launched on April 25.2008.

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"The new satellite can cover a greater area to track and command the country's space vehicles m low-Earth orbits, such as manned spacecraft and remote sensing satellites, from a higher position m outer space.Only three satellites of this kind are needed to form a global communication network, and China has two now." Pang Zhihao, a researcher and deputy editor-in-chief of Space International, said.

The satellite could also equip astronauts with real-time communications, which will benefit the county s future manned space flights, he said.

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