A. informations B. knowledge C. background D. information
A.informations
B. knowledge
C. background
D. information
A.informations
B. knowledge
C. background
D. information
I had to get ______ about the subject before I write the paper. ()
A.a few more informations
B.a little more information
C.a few more information
D.a little more informations
I have to get______ about the subject before I write the paper.
A.a little more information
B.a lot more informations
C.a few more information
D.more informations
He opened the letter and it contained ______ .
A.an important information
B.some important informations
C.many important information
D.some important information
已知广义积分收敛于1(k>0),则k=().
A.
B.
C.
D.
任何一级反应的半衰期 ()
A.都与k、c0有关
B.都与c0有关
C.都与k有关
D.都与k、c0无关