输煤系统停车时，控制室操作人员按各岗位响铃（）次。
A.1
B.2
C.3
参考答案：C
----- His long ______ speech made the audience very ______ .
-----No wonder many people fell asleep.
A．tiring…tiring
B．tired…tired
C．tiring…tired
D．tired…tiring
热熔铺贴卷材，展铺法主要适用于条贴法铺贴的卷材。( )
