Why does the Foundation concentrate its support on basic rather than applied research Basic research is the very heart of science, and its cumulative product is the capital of scientific progress, a capital that must be constantly increased as the demands upon its rise. The goal of basic research is understanding for its own sake. Understanding of the structure of the atom or the nerve cell, the explosion of a spiral nebula (螺旋星) or the distribution of cosmic dust, the causes of earthquakes and droughts, or of man as a behaving creature and of the social forces that are created whenever two of more human beings come into contact with one another—the scope is staggering, but the commitment to truth is the same. If the commitment were to a particular result, conflicting evidence might be overlooked or, with the best will in the world, simply not appreciated. Moreover, the practical applications o
A. Right
B. Wrong
C. Not mentioned
| Space is a dangerous place, not only
because of meteors but also because of rays from the sun and other stars. The
atmosphere again acts as our protective blanket on earth. Light gets through,
and this is essential for plants to make the food which we eat. Heat, too, makes
our environment endurable. Various kinds of rays come through the air from outer
space, but enormous quantities of radiation from the sun are screened off. As
soon as men leave the atmosphere they are exposed to this radiation but their
spacesuits or the walls of their spacecraft, if they are inside, do prevent a
lot of radiation damage. Radiation is the greatest known danger to explorers in space. The unit of radiation is called "rem". Scientists have reason to think that a man can put up with far more radiation than 0.1 ream without being damaged; the figu A. it protects him against the harmful rays from space B. it provides sufficient light for plant growth C. it supplies the heat necessary for human survival D. it screens off the falling meteors [单选题]ZD6系列电动转辙炭刷长度不少于炭刷全长的（ ）。
A.1\2 B.3\4 C.2\3 D.3\5 [单选题]发现燃气泄漏,要速关阀门,打开门窗,不能( )。
A.触动电器开关或拨打电话 B.使用明火 C.A和B都正确 [单项选择]有SQL语句：
SELECT DISTINCT系号FROM教师WHERE工资＞＝； [单选题]调解是解决工程合同价款纠纷的一种途径,下列关于调解的说法中正确的是( )。
A.承包人对调解书有异议的,可以停止施工 B.发承包双方签字认可的调解书不能作为合同的补充文件 C.发承包双方可在合同履行期间协议调换或终止原合同约定的调解人 D.调解人的任期在竣工结算经发承办双方确认后终止 [单选题]（）级国家秘密是一般的国家秘密，泄露会使国家安全和利益遭受损害。
A.秘密 B.机密 C.绝密 D.以上都正确 [单选题]社会公益活动属于课外活动的哪种组织形式?（ ）
A.群众性活动 B.小组活动 C.个人活动 D.社会活动 我来回答: 提交
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