皮皮学，免费搜题
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【多选题】
常用的相对数包括A.
率
B.
构成比
C.
相对比
D.
相对危险度
E.
特异危险度
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皮皮学刷刷变学霸
举一反三
【简答题】Computer software is a set of computer .
【单选题】We are anxious to hear any information ________ his health.
A.
involving
B.
including
C.
considering
D.
concerning
【简答题】A. Leam a computer language. C. Buy some computer software. B. Leam data processing. D. Buy a few coursebooks.
【单选题】We are anxious to contact some Indian companies with a view （） business relations with them.
A.
to build
B.
to building
C.
for building
D.
building
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