在水准网的主要技术要中,二等水准网要求每千米高差中误差应为( )。
A.±1
B.±2
C.±3
D.±6
参考答案:B
河间学派
She was not beautiful, she didn’t _______her mother, who was a beauty.
A.like
B.imitate
C.resemble
D.represent