响墩放置位置恰在（）或隧道内时，应将响墩放置位置向外方延伸。
A.钢轨接头
B.道岔
C.无碴桥上
D.道口
参考答案：A, B, C, D
（）should be responsible for loading,handling,stowing,carrying,keeping,carring for and discharging the goods carried according to the normal practice.
A.The shipowners
B.The shippers
C.The carriers
D.The ship’s officers
叙述SG1025引进型锅炉紧急停运引风机的条件。
