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【简答题】
用硬件描述语言设计电路有哪些优点？
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【简答题】In the past several years, _____________(粮食产量增长了10%)in this area.
【简答题】Very significant advances in lasers have been made in the past several years that open the door to more rapid progress in optical communicaitons system.
【单选题】Econometrics has witnessed a rather rapid development in the past several decades because
A.
There is a need for empirical verification of economic theory
B.
More and more high quality economic and finance data are available.
C.
Advance in computer technology
D.
All of the above
【单选题】配制NaOH标准溶液时,正确的操作方法是
A.
在托盘天平上称取一定质量的NaOH，烧杯溶解后用容量瓶定容
B.
在托盘天平上称取一定质量的NaOH，烧杯溶解后稀释到一定体积，再用标准溶液或基准物质进行标定
C.
在电子天平上准确称取一定质量的NaOH，烧杯溶解后用容量瓶定容
D.
在电子天平上准确称取一定质量的NaOH，烧杯溶解后稀释到一定体积
【单选题】In the past several weeks, many cities in Northern China from heavy fogs and severe cold.
A.
had suffered
B.
have been suffering
C.
were suffered
D.
suffered
【单选题】Why financial aid has been boosted in roughly 100 universities and colleges in the past several years ?
A.
Because of the growing shortage of poor and working-class students on campus.
B.
Because the government wants to boost the socioeconomic diversity.
C.
Both A and B
【单选题】我们在过去几个月里已经成功地加速了生产率。
A.
In the past several months, we have successfully increased our productivity.
B.
We have succeeded in speeding up our production rates in the last few months.
C.
In the last several months, we have speeded up our production rates.
D.
We have increased our prod
【单选题】In the past several years, the representatives of the two countries have met frequently to discuss ______ issues.
A.
a cluster of
B.
a host of
C.
a flock of
D.
a bunch of
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