题目内容

滴定时,滴定管应该如何装滴定液()。

A. 由试剂瓶直接倒入滴定管
B. 先由试剂瓶倒入烧杯,再由烧杯倒入滴定管
C. 用移液管从试剂瓶将溶液转移至滴定管
D. 先由试剂瓶倒入锥形瓶,再由锥形瓶倒入滴定管

查看答案
更多问题

In talking to some scientists,particularly younger ones,you might gather the impression that they find the:“scientific method”a substitute for imaginative thought. It seems that some young scientists_________.

A. have a keen interest in prediction
B. often speculate on the future
C. think highly of creative thinking
D. stick to“scientific method”

Well,no gains without pains,they say.But what about pains without gains? Everywhere you go in America.you hear tales of corporate revival.What is harder to establish is whether the productivity revolution that businessmen assume they are presiding over is for real. The author raises the question“what about pains without gains?”because

A. he questions the truth of“no gains without pains”
B. he does not think the productivity revolution works
C. he wonders if the official statistics are misleading
D. he has conclusive evidence for the revival of businesses

Aimlessness has hardly been typical of the postwar Japan whose productivity and social harmony are the envy of the United States and Europe. In the Westerner's eyes,the postwar Japan was_________.

A. under aimless development
B. a positive example
C. a rival to the West
D. on the decline

In the past year, however, software companies have developed tools that allow companies to“push”information directly out to consumers,transmitting marketing messages directly to targeted customers.Speaking of the online technology available for marketing,the author implies that_________.

A. the technology is popular with many Web users
B. businesses have faith in the reliability of online transactions
C. there is a radical change in strategy
D. it is accessible limited to established partners

答案查题题库