承运人和托运人、收货人在货物运输过程中都应遵守《铁路货物运输规程》的规定。
参考答案：对
颅骨骨折的直接征象是
A．颅缝分离
B．颅内积气
C．软组织肿胀
D．骨折线
E．蝶窦积液
—Listen! Is Professor Johnson giving a report in the hall?
—No, it _____ be him. He has gone to Japan. [ ]
A. needn't
B. may not
C. mustn't
D. cannot
