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【简答题】
金属材料的性能一般分为两种,一类是使用性能,一类是工艺性能,前者包括 ____________ , 和 ,后者包括 , , , 和 。
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【简答题】在Internet域名系统的资源记录中，表示主机地址的对象类型为（ ）。 A)HINFO B)MX C)A D)H
【单选题】Perhaps the best sign of _____ computer and internet use pushes up demand for paper comes from the high-tech industry itself.
A.
how
B.
what
C.
why
D.
that
【简答题】按照公司的规定，压缩机的启动次数遵循的原则是功率在（）的异步电动机在冷态下可以启动2次，每次间隔不得低于5分钟；热态时允许启动1次。对于我们装置的两压缩机来说，实际的间隔时间为（）。
【单选题】Only in recent years ________ begun to realize the importance of Internet.
A.
people have
B.
have people
C.
that people have
D.
since have people
【单选题】From the first paragraph, we can learn that ______.
A.
investors believe that Internet and housing market can help them get rich
B.
emerging market is still the last hope for investors to get rich
C.
young people in developing countries are under-represented in the global stock market
D.
to purchase stock in emerging markets is secure and reliable
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