站间行车通信不仅与相互通信的两个系统以及连接两系统的数字通道有关，与主系统以及其他分系统也有关。
参考答案：错
— I want to learn something about the 2008 Olympics.
— You can go and the Internet some information. [ ]
A. search; for
B. search for; for
C. search; on
破伤风患者最早发生痉挛的肌肉是
A．面肌
B．咀嚼肌
C．颈背肌
D．膈肌
E．四肢肌
