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【简答题】
某工地所用碎石的密度为2650kg／m3，堆积密度为1680kg／m3，表观密度为2610kg／m3，该碎石的空隙率为________。
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反馈参考答案：
举一反三
【单选题】冯·诺依曼在总结研制ENIAC计算机时,提出两个重要的改进是()
A.
引入CPU和内存储器的概念
B.
采用机器语言和十六进制
C.
采用二进制和存储程序控制的概念
D.
采用ASCII编码系统
【单选题】Talent can come in so many different forms and be built in so many nontraditional ways today, hiring officers have to be alive to every one — besides brand-name colleges. (Para. 9)
A.
Talented people seeking employment at Google are from all walks of life and are nurtured in so many unconventional ways that hiring officers should be alert to every one especially those from big name schools.
B.
Talent can be displayed in so many different forms and cultivated in so many nontraditional ways today, hence hiring officers must be open-minded and creative in hunting up talent, not having their eyes only on graduates from famous colleges.
【单选题】With so many forms _______, many students feel at a loss before the 2010 college entrance exam.
A.
to fill in
B.
filled in
C.
filling in
D.
to be filled in
【单选题】With so many forms ___, many students feel at a loss before the 2012 college entrance exam. [ ]
A.
filling in
B.
filled in
C.
to fill in
D.
to be filled in
【单选题】—Why are the tax collectors so busy? —Many people prefer to have their tax forms completed by a professional rather than ___.
A.
do it themselves
B.
doing it themselves
C.
to do it themselves
D.
done by themselves
【简答题】Cultural life in England takes so many forms that a brief summary can only attempt to ________ its variety. A) suggest B) remind C) consider D) propose
【单选题】With so many different forms of poetry ______, students may eventually want to write poems of their own.
A.
choosing from
B.
chosen from
C.
to choose from
D.
to be chosen from
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