问题
选择题
.
Atlanta is representative of the new South, a place _______ hope and faith have replaced fear and doubt.
A．which
B．where
C．what
D．that
答案
答案：B
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.
Atlanta is representative of the new South, a place _______ hope and faith have replaced fear and doubt.
A．which
B．where
C．what
D．that
答案：B
，式中r是正、反顶夸克之间的距离，as＝0．12是强相互作用耦合系数，k2是与单位制有关的常数，在国际单位制中k2=0．319×10-25J·m；而在电荷之间的相互作用中，相距为r，电荷量分别为q1q2的两个点电荷之间的电势能
，式中k1是静电力常量．根据题中所给信息可以判定下列说法正确的是 （ ）
