涉及缺陷、变更等流程不一定会触发工单操作。
参考答案：错
Mary was born in 1752 in a rich family in _____ is now the state of Virginia.
A．which
B．where
C．that
D．what
“丝绸之路”在新疆境内主要有（）线路。
A、1条
B、13条
C、25条
