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【单选题】
关于预分馏,下列说法错误的是()A.
通过预分馏，将急的裂解气进一步冷却至常温
B.
通过预分馏，分馏出裂解气的重组分，如：裂解汽油、裂解燃料油等
C.
将裂解气中的稀释蒸汽以冷凝水的形式分离回收，用以再发生稀释蒸汽，减少污水排放
D.
预分馏过程可以回收裂解气低能位热量，但同时增加了裂解气压缩机的功耗
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举一反三
【单选题】A 65-year-old man presents to the neurology clinic with a several year history in which he has less and less energy and spontaneity, memory loss (especially recent s), and mood swings. He is desc...
A.
Stimulating aggregation of proteins
B.
Contributing folding information to the native protein
C.
Controlling the docking of the signal peptide with its receptor on the rough endoplasmic reticulum
D.
Inhibiting proteolytic activity of misfolded proteins
E.
Using their ATPase activity to bind and release themselves from hydrophobic regions of the protein
【简答题】He is slow to learn, but shows great in the face of difficulty.
【简答题】persevere 1) If you _______________ with your work, you will succeed in the end. 2) Mary is a ___________________ student. 3) He is slow to learn, but shows great __________________________ in the fac...
【简答题】请听下面一材料，回答第1-3题。 1. Where is the speaker going? A. To Africa. B. To Europe. C. To America. 2. What is the speaker most concerned about? A. Whether he can save money. B. Whether he can visit many place...
【简答题】He is slow to learn, but shows great in the face of difficulty. (persevere)
【简答题】下列程序的输出结果是______。 void fun(int*n) {while((*n)--): printf("%d",++(*n)); } main() { int a=100; fun(＆a); }
【简答题】有以下程序#include #define N 4void fun(int a[][N], int b[]) { int i for(i=0 i
【单选题】Although my grandpa is very old, he is not slow____ mind to learn how to set up an Internet account.
A.
on
B.
to
C.
in
D.
at
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