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【单选题】
某混合蛋白质溶液包含5种蛋白质,其PI分别是4.6、5.0、5.3、6.7、7.3。欲通过电泳使其中4种泳向正极,缓冲液的pH应该是A.
4
B.
5
C.
6
D.
7
E.
8
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【简答题】下列程序的运行结果是_____。#include main(){ int a=2,c=5;printf(“a=%d,b=%d \n”,a,c);}A.a=%2,b=%5 B.a=2,b=5 C.a=d,b=d D.a=%d,b=5d
【单选题】On her visits to her hometown, the author did not explore her secret homes closely because .
A.
she did not have the chance to do so
B.
she did not want to destroy her beautiful memory of the childhood with adult perceptions
C.
she could not remember where they are
D.
the secret homes of hers are very difficult to find
【单选题】The quantity of loanable funds supplied is normally
A.
less interest elastic than the demand for loanable funds.
B.
more interest elastic than the demand for loanable funds.
C.
highly interest elastic.
D.
equally interest elastic as the demand for loanable funds.
【单选题】The quantity of loanable funds supplied is normally ________
A.
highly interest elastic.
B.
more interest elastic than the demand for loanable funds.
C.
less interest elastic than the demand for loanable funds.
D.
equally interest elastic as the demand for loanable funds.
【单选题】祖母绿通常 ___________ 方向颜色相对较好,加工时应使台面 __________ 。
A.
∥ C 轴，∥ C 轴
B.
∥ C 轴，⊥ C 轴
C.
⊥ C 轴，∥ C 轴
D.
⊥ C 轴，⊥ C 轴
【单选题】She wrote a letter to her father, ___ she made her secret known.
A.
which
B.
that
C.
in which
D.
where
【简答题】下列程序的运行结果是___B___。#include main(){ int a=2,c=5;printf(“a=%d,b=%d \n”,a,c);}A.a=%2,b=%5 B.a=2,b=5 C.a=d,b=d D.a=%d,b=5d
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