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【单选题】
开车准备过程中化工装置试车介质应执行设计文件的规定,若无特殊规定,泵、搅拌器宜以( )为介质,压缩机、风机宜以空气或氮气为介质。A.
蒸汽
B.
水
C.
空气
D.
二氧化碳
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举一反三
【单选题】He _________the other students because he studies harder.
A.
has an edge on
B.
is an edge on
C.
will be an edge on
D.
sits an edge on
【简答题】But he can play football only on Saturdays or Sundays, since he has to study on the other days. But he can play football only on weekends, because he______.
【单选题】Tony has three good friends here and he has one in Beijing. [ ]
A.
another
B.
other
C.
the other
D.
others
【简答题】经济生态学(Economic Ecology)是研究生态学和各类生态系统、种群、群落、景观、生物圈过程与( )过程相互作用方式、( )体制及其经济价值( )的科学;它谋求实现社会经济与自然生态的协调,以求得社会经济的可持续发展。
【简答题】A．She has been to all the countries in the world. B．He wants her to recommend some places she has been to. C．She is really lucky to have traveled a lot. D．She should he a guide for a travel agency.
【单选题】Henry has three good friends here and he has _____ one in London. [ ]
A.
the other
B.
other
C.
another
D.
the another
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