大闸在制动区缓解柱塞阀将遮断阀管与：（）。
A、列车管接通
B、总风管接通
C、均衡风缸管接通
参考答案：B
OpenReport命令用于______。
从方框中选择恰当的句子补全对话，其中有两项是多余的。
Girl: Let's join a club. 1
Boy: Oh, I don't know.
Girl: Well, what can you do? Can you play chess? 2
Boy: No, I can't play chess.
Girl: 3
Boy: Yes, I do. And I can sing.
Girl: Great ! 4
Boy: No, I can't, but I can play the guitar.
Girl: You can? 5
Boy: Yes, I do.
