What does the author think of the new immigrants？ 查看材料
A. They will be a dynamic workforce in the U. S..
B. They can do just as well as their predecessors.
C. They will be very disappointed on the new land.
D. They may find it hard to fit into the mainstream.
Computers will flourish because they enable us to accomplish tasks that could never before have been undertaken.
A. implement
B. render
C. assign
D. complete
由于恩氏蒸馏基本上没有精溜作用，油品中最轻组分的沸点低于初馆点，最重烃分子的沸点高于干点。()
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