在工程流程图中如果有表示流程的线条相交，应遵从“主流程线条不断开、副流程线条断开”的原则。
参考答案：对
Between the two generations, it is often not their age, _____ their education that causes misunderstanding. [ ]
A. like
B. as
C. or
D. but
禁止旅客为其他人捎带物品。（）
